Editor freeze on log window select( version 4.7.3)

Scenario:

Launch existing project or create new one and launch.

Bring up Output Log window.

Docking it or leaving it floating.

Clicking inside window.

editor Freezes.

This happens 100% of time for every type of projekt.

System:

Windows 8.1 (x64)
3 monitors
GTX 760 GPU
intel(R) Core™i5-4690k CPU @ 3.5GHz
16gb ram

engien/Editor is built from source with no modification.

Happens to me too, 4.7.3 built from source with Win 8.1.

If I pause Editor under VS main thread is always hung in FTextStoreACP::RequestLock on *phrSession = AdviseSinkObject.TextStoreACPSink->OnLockGranted(LockManager.LockType); line.

This topic seemed very related: [4.5] The Output Log degrades performance - Debugging, Optimization, & Profiling - Epic Developer Community Forums

It links https://github.com/EpicGames/UnrealEngine/commit/23cb8cbc5b90b684f65edd2c0a21a731d219fd56 as a fix for when a tablet is connected. Although I have no tablet whatsoever this seemed to fix bug for me.

Hi Slinker,

Do you have a tablet connected to PC? I believe you may be experiencing same issue reported here:

If you have a tablet, try disconnecting it and restarting editor. Let us know if that doesn’t solve problem for you.

Disconnecting tablet worked for me! Tnx!