File > Export > Export...
and select a format other than PDF (the default), the default format will be the last one used.
So far everything is working as expected.
Now, when exporting using the default Alt+E keyboard shortcut, the default format will always be PDF, even if you select a different format.
This can be solved by changing the Export keyboard shortcut, which will result in the last format exported with the menu being the same as using the keyboard shortcut and vice versa.
Usage > Keyboard Layout > File > Export > Export... > New Shortcut
However, even if you remove Alt+E as a keyboard shortcut, it still activates when pressing this combination and works with PDF as the default format.

Related topic: https://www.pl32.com/forum3/viewtopic.p ... 252#p51252