Freeze on Analysis on MacOS Big Sur 11.0.1

[howtoosee]

Programme freezes when analysis tab is opened when user sets system preferences to always prefer tabs when opening new documents.

To reproduce:

1. System Preferences > General > Prefer tabs: always.
2. Open analysis for a circuit
3. Programme freezes

Programme version: Build git-version: v0.25

System info: OS: MacOS Big Sur 11.0.1 Java: java 11.0.8 2020-07-14 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.8+10-LTS) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.8+10-LTS, mixed mode)

[hneemann]

Does it freeze immediately after opening the dialog, or are there still actions possible/necessary until it freezes?

[howtoosee]

Immediately after the dialogue opens, then the spinning wheel shows when hovering over the programme

[hneemann]

At first look I can't find anything in the code that could be the cause. Is there any processor load in the frozen state?

[howtoosee]

There is a CPU spike from ~3% to as high as 60-80% when frozen. Sometimes it crashes entirely and the window closes.

[hneemann]

And after the spike the load of the Java process drops to zero?

[howtoosee]

That doesn't seem to be the case. The process remains high consistently with some slight fluctuations. Java doesn't crash but simply freezes.