Change in the Current Work Directory during initialisation bug

[lsrosa]

Following the code:

1.     #%% Start Mustard
2.     cwd = os.getcwd()
3.     import threading
4.     import mustard
5.     app = mustard.Mustard()
6.     thread = threading.Thread(target=app.run)
7.     thread.daemon = True
8.     thread.start()
9.
10.    #%% Once mustard is open, undo the change of working directory
11.    os.chdir(cwd)
12.    del cwd

It saves the current work dir (cdw) (line 2), and starts mustard (lines 3 to 8). After that it resets the cwd (lines 10 to 12).

On line 10 there is this code block separator. If I try to run the two blocks together, it bugs. If I run the first, it finishes loading mustard without problems, then I run the second without problems.

Seems like mustard is being initialized by a thread which is not locking the cwd, and it changes while loading, causing bugs.

Also, I am not clear why "import mustard" changes the cwd