Bug report here: call stack information was shown in threads info windows.
Steps to reproduce:
1, suppose the call stack and threads window were no shown.
2, clear the whole debugger log
3, open the threads window->show correctly
4, open the call stack window->show correctly
5, double click on one frame of the stack window
6, I see both the two window get refreshed. stack window becomes empty, all the stack was shown in threads window.
Screen shot below:

Log message in attachment.
Maybe, the opened disassembler windows cause this issue?
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