Edit: my system had global key map which had overridden PyCharm. Here's the original question:
I've tried these answers, but nothing happened: Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ IDEA
For example:
I've tried these, but they didn't do anything:
Or maybe F12 ("go to def") isn't "strong enough" to trigger a location-change event?
All in all, it has nothing with PyCharm;
In my case, there was a global key combo of another program, that masked Ctrl-Alt-Left
I solve it by remapping "file > settings > keymap > main menu > navigate > back".
I chose Alt+Left, which intuitively feels likes web browsers "back" behavior.