A strange warning in console

[hooke007]

Sometimes I opened a file via the menu item (open files)

Not sure if it would affect sth. I built from the master and find it.
But would not happen for every file (or not each time. Really weird).

[stax76]

wm4 and I were involved in this:

mpv-player/mpv#7501

Please note that I have terrible memory.

[stax76]

Thing is annoying IMO. For development, I'm in the terminal quite often.