# \[Bug\] In Editor Bug **URL:** \ **Category:** Programming & Scripting\ **Tags:** unreal-engine\ **Created:** [June 3, 2016, 10:47am UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494 "2016-06-03T10:47:57Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Dadlord36](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dadlord36](https://forums.unrealengine.com/u/Dadlord36)\ **Post date:** [June 3, 2016, 10:47am UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/1 "2016-06-03T10:47:57Z")
When I switching to EventGraph in Blueprint Editor, I can sudden drag “EventGraph” tab and UE 4.12 will crash. This is bad. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [June 3, 2016, 3:40pm UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/2 "2016-06-03T15:40:12Z")
Hi Dadlord36, Unfortunately I have not been able to reproduce this on my end thus far. - Does this occur in a clean, blank project with no additional content or is it limited to one project? - What steps can I take to reproduce this on my end? - Can you post your crash logs (\Unreal Projects\PROJECTNAME\saved\logs) and crash callstack here so I can take a look? - What OS are you currently using? - Does this only occur with a specific blueprint/type of blueprint or is it any blueprint? ---
**Author:** ![Dadlord36](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dadlord36](https://forums.unrealengine.com/u/Dadlord36)\ **Post date:** [June 3, 2016, 8:58pm UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/3 "2016-06-03T20:58:15Z")
My PC is pretty old ( Windows 10 Pro, Core i3, 8gb RAM, Mobility Radeon HD5650 ). Just was able to reproduce same bug in New Project with Third Person template. This time this bug appears not so fast, and I was started to think that it is because of my code… But it did appears again. Maybe it happens when something is overloaded, maybe CPU. And actually this time, after minute, UE editor unfreezes. ---
**Author:** ![Dadlord36](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dadlord36](https://forums.unrealengine.com/u/Dadlord36)\ **Post date:** [June 3, 2016, 9:05pm UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/4 "2016-06-03T21:05:18Z")
Also I found that each time I make function in blueprint as const, and it not really can be const - Editor crashes. In previous 4.11 it wont crashed in such situation and just was marking nodes, that does change some values, as errors. ---
**Author:** ![Dadlord36](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dadlord36](https://forums.unrealengine.com/u/Dadlord36)\ **Post date:** [June 6, 2016, 2:16pm UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/5 "2016-06-06T14:16:59Z")
Actually it freezes on dragging any tab, like opened Blueprint or any tab in this blueprint. ---
**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\ **Post date:** [June 6, 2016, 3:52pm UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/6 "2016-06-06T15:52:15Z")
Hi DadLord, The error you are experiencing is likely caused by your GPU, it is below our recommended specs: > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... Can you open your task manager and see if there is a spike in performance when performing the drag action? ---
**Author:** ![Dadlord36](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dadlord36](https://forums.unrealengine.com/u/Dadlord36)\ **Post date:** [June 6, 2016, 4:12pm UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/7 "2016-06-06T16:12:09Z")
Ok. Thanks for info! ---
**Author:** ![Dadlord36](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dadlord36](https://forums.unrealengine.com/u/Dadlord36)\ **Post date:** [September 15, 2016, 10:07am UTC](https://forums.unrealengine.com/t/bug-in-editor-bug/359494/8 "2016-09-15T10:07:39Z")
Here is exaption when this happens againg. Does it can be trouble with my hardwere? ![107078-bug+on+tab+dragging.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/f/2/2f235d38a209bd36d2ab29054de42eee15f32e9a.png)