To be fair, UE4 hotfix releases are very fast compared to the rest of the industry ^^. And so does the major release…
Btw, it is also important to make sure the fixes do not introduce new bugs - just give them time to put up good fixes.
UPDATE!
The 4.14.1 Hotfix is now live! hotfix resolves over 50 issues with the 4.14 release.
Fixed in 4.14.1
Fixed! UE-35609 Delay nodes used in a macro cause subsequent macro calls during the delay to never complete
Fixed! UE-38690 Regression - Nested scene component subobjects are no longer being registered when the owning scene component is added to an existing Actor instance as an instanced component.
Fixed! UE-38835 Rename “Visual Studio ‘15’” to “Visual Studio 2017”
Fixed! UE-39298 UE4 and UnrealLightmass fail to build Module.SwarmInterface.cpp due to an error trying to open include file ‘metahost.h’ in SwarmInterface.cpp
Fixed! UE-39284 Running GenerateProjectFiles.bat -2017 completes with warnings
Fixed! UE-38898 UE4 is not compatible with Visual Studio 2017 RC
Fixed! UE-38604 PS4 Platform Staging copies debug files (not allowed)
Fixed! UE-38992 [CrashReport] UE4Editor_Core!FString::Mid() [unrealstring.h:1154]
Fixed! UE-37249 MallocPoisonProxy can result in a memory stomp for aligned allocations in Debug and Development
Fixed! UE-38991 [CrashReport] UE4Editor_Engine!FUObjectAnnotationSparse<FBoolAnnotation,1>::AddAnnotation() [uobjectannotation.h:76]
Fixed! UE-38752 Cannot Delete Folder Containing Sub Folders from Content Browser
Fixed! UE-38721 Mouse cursor position is locked to center of screen when bShowMouseCursor is false
Fixed! UE-38599 User Defined Struct Editor Hides Long Variable Lists
Fixed! UE-38706 Dropdowns display incorrectly in non 1:1 zoom in BP on and PC
Fixed! UE-38806 Potential fatal assert when using a custom MID with a TextRenderComponent
Fixed! UE-39059 No scrollbar in Structure UI
Fixed! UE-39198 Limited range of motion when controlling the camera view with the mouse
Fixed! UE-11796 Deleting folders in the Content Browser will not delete them permanently from Project Folder
Fixed! UE-38925 Reimport for a single FBX with multiple meshes will add all mesh pieces instead of the single mesh.
Fixed! UE-38935 Crash with FBX Import as Skeletal Mesh
Fixed! UE-38749 Pressing enter does not appear to activate OnClicked events in UMG When a button is focused
Fixed! UE-37698 Widgets can no longer take focus after clicking somewhere other than the widget itself
Fixed! UE-36766 Crash attempting to open an asset from Aim Offset graph in Persona
Fixed! UE-38811 Camera attached to a Spring Arm jitters when put at a +90 or -90 degree angle on the Y axis.
Fixed! UE-38906 Crash when streaming in a level with a child actor
Fixed! UE-38518 Animation Blueprint: Default values cannot be changed after compiling if node is currently selected
Fixed! UE-39197 Delay node of 0.0 causes crash
Fixed! UE-39137 Crash when Dragging Skeletal Mesh with Apex Clothing into Level
Fixed! UE-38998 [CrashReport] UE4Editor_Engine!UMaterialInterface::GetBaseMaterial() [materialinterface.cpp:268]
Fixed! UE-38716 Physics are popping in Vehicle Advanced Template
Fixed! UE-38989 [CrashReport] PhysX3PROFILE_x64!physx::PxcDiscreteNarrowPhase() [pxcnpbatch.cpp:293]
Fixed! UE-38694 Landscape Grasstype warning causes log spam when landscape is streamed in or out
Fixed! UE-39278 Assertion failed: !LandscapeActor || LandscapeActor == Landscape
Fixed! UE-38900 Paper2d Plugin Content Missing from Content Browser
Fixed! UE-39120 ETC2 Android devices are no longer supported in the Google Play Store as of 4.14
Fixed! UE-37101 Xbox One: Issues updating texture subregions
Fixed! UE-35738 IPv6 implementation is not working on IOS
Fixed! UE-39420 QAGame crashes when launched onto Android
Fixed! UE-38709 Using Deferred Decal Material With Dbuffer Decal Enabled Crashes Editor
Fixed! UE-38223 Crash In Material Editor When Previewing A Node
Fixed! UE-39051 Engine crash when Scene Capture Component 2D is added to viewport with forward rendering
Fixed! UE-39123 Editor crashes when opening Realistic Rendering sample - FMetalRHICommandContext::RHISetShaderUniformBuffer
Fixed! UE-38609 DFAO runs out of memory on xb1 (DX11 RHI) due to an RHI bug
Fixed! UE-38699 Material Expression comparison keys incorrect, produces duplicate code
Fixed! UE-38325 Tangent Update Feature Not Working
Fixed! UE-38768 Contact Shadow artifacts with ray lengths despite length
Fixed! UE-34264 Procedural Mesh Component Crashes on XB1
Fixed! UE-39132 Crash when adding actors to the level
Fixed! UE-38353 Crash while deleteing a UMG Animation Track referencing a deleted UMG asset with duplicated BSPs in-scene
Fixed! UE-39067 Oculus Touch controllers jitter when the gamethread runs quickly
Fixed! UE-39113 Post process material needs a full RT clear with hmd mask.
Fixed! UE-39122 Crash when Simulating in Editor after Painting Foliage
Fixed! UEVR-381 Interleaved Compositor: Execute init views before late update
Fixed! UEVR-379 Interleaved Compositor: Implementing Post-Present handoff
Fixed! UE-38670 New IsA() code can be thread-unsafe during saving
REMEMBER: Please report any new bugs you find by following the How To Report a Bug Guide
Looks like a great patch, awesome work! 
Great, and a few fixes very “hot” fixes, thanks!
does mean when you collide with things the vehicles won’t fly into space anymore!?
because as of right now my game is a great rocket simulator the moment you hit a tree or any object. (haven’t tested the hotfix)
To my understanding addresses part of the issue, but some aspects still need to be worked on.
the 4.14.1 hotfix has rendered most blueprints in my project unopenable so its looking like a hotbreak at point
Thanks for the fixes! I love fixes. Much better than new bugs (er, features). 
I am sooo excited for the 4.15 “fixes” version next quarter.
Bugs I still experience in 4.14.1:
UE-37428 - Certain BP class properties keep losing valueUE-39294 - Menus don’t update on
UE-39464 - GetPlatform node returns “IOS” on tvOS
UE-39501 - tvOS package for distribution fails to find valid certificate and valid provision
unassigned - Valid Development Provision and Certificate ignored for tvOS on 4.14.0
unassigned - What is waking up my physics?
unassigned - 4.14.1 fails to launch on android from fresh install with “Unsupported major.minor version 52.0”
Note that the UE-39501 tvOS issue completely blocks creating a distribution package for tvOS. I can’t get to market!!! :mad:
Say it ain’t so. I am DLing now. It’s been a bit unstable, so I was looking forward to hotfix…but if it’s going to break me good. Say it ain’t so.
well its seems like any blueprints that i made or are linked to blueprints made in 4.14.0 crash anything else from before opens fine just tested marketplace items and older projects which seem fine…
Hi.
Can you please log a report on the Answerhub in the ‘Bug Reports’ section, and we’ll follow up soon. If there is an issue with the hotfix, we’d like to investigate.
Thanks
will do thanks for your help
crash is driving me crazy 
Does mean I can ditch my (slightly broken) VS 2015 installation and go forward with a clean VS 2017 install? 
Install failed insufficient storage, can i change the engine location, to not use C???
Have 4.13 and 4.14 installed, uses 70gb on my C drive. Installing the hotfix requires additional 11 gb …
Quick fix to free up space, navigate into 4.x folders and delete packs from the VaultCache folder
Is there anything special about those blueprints, no issues encountered here with that, so far.
Curious, did something change in regards to compiling shaders? Project recompiles all shaders after upgrade (not using ).
Fixed! UE-38699 Material Expression comparison keys incorrect, produces duplicate code.
that will make one of my coder-buddies very happy.
In 4.14 and 4.14.1, LineTraceByChannel, LineTraceByObject ,“Line” is not displayed after Build/Package. In Editor/VR Preview, line are displayed correctly.
Great! Will try it out on Monday or Saturday after I finish some current on going work.
Anyone knows if Widget components still show as experimental?