OutOfMemoryException when uploading in background

[proksch]

It seems that closing the upload window (sending it to the background) regularly causes an OutOfMemory exception that pops up a bit later. It seems to occur only if the user selects something in the event manager, but this is only speculation right now.

I suggest to disable the "send to background" feature as a temporary hotfix, but we should look into this and fix it as soon as possible.

[salsolatragus]

Is anyone still experiencing this? We lock the Feedback Manager UI now, during upload, which provides a progress report about the ongoing upload and prevents interactions that might trigger race conditions...