Signals blocked/nothing else works if _process() busy?

Aeon

Godot version: 2.1.4 stable

Problem: When process() is active and busy, it appears none of the game's signals are processed or executed, if they're being emitted at all. Is there, for example, any way of setting signal/interrupt priorities in GDScript, giving higher priority of execution of their functions over process()? Should i rather use _fixed_process() instead to give time for other things to execute?

Would be very very thankful for any help.

Aeon

So for some reason, when reading input off the mouse with Input.is_mouse_button_pressed(<mouse button>), which i'm assuming is what the functions behind the enter and exit button signals are built on top too, blocks the emit signal action of those button signal functions.