I’ve just upgraded to 4.22.0-5660361 and now any right click context menu or similar process (like asset rename) gets cancelled in ~5 seconds due to window focus loss.
If the context menu was open in a viewport in the main window then the output log is spammed with dozens of “FSceneViewport::OnFocusLost() reason 3” messages.
According to WindowFocusLogger UE4Editor steals the focus from itself… o_O No other app shows up in the focus list. I’ve never had this problem with 4.21.
The editor is barely usable now (I can’t even create a new asset if I can’t locate it in 5 seconds from the dropdown menu). Any tips how to work around this?
Windows and display driver update didn’t help.
Even if I’m not doing anything just have the main window in focus the log is spammed every 10 seconds. For example (note the time stamps):
I quit Display Fusion, EventGhost, antivirus, firewall, unplugged the keyboard and keypads, didn’t matter.
The logspam indicates that every 10 seconds the focus is lost every 8 ms for a ~1.3 seconds long period of time.
As it turns out this issue is caused buy the Niagara timeline panel: the lost focus happens when and while it has to scroll to follow the play location arrow. The workaround is to zoom out so the entire play range is visible and there is no need for scrolling. The proper fix will be in the 4.22.1 update.
We are having the same issue, but we are not using Niagara.
We do use GAS aka GameplayAbilities.
Also updating to 4.22.3 didn’t help us at all, so I think that there is more to it.
Also removing Saved and Intermediate folders, didn’t not help either.