Text fields lose focus quickly if cursor moves while typing

It is not really a bug, just annoying for years: I am super quick with mouse and pen → I click into a textfield or drag my selection around the text I need to copy it and jump instantly to the next action. This works for all programs I know (Windows, 3 screens btw).

Not in Substance Painter (and I think Designer has the same issue). If I click into a textfield to enter a name for a layer or material, or set a slider to an exact value I always need two or three attempts. Because I am so fast with my cursor that when starting to write my mouse cursor is alreay moved away from the text field. Or I use my Wacom pen: Click into the textfield with the pen, raise it to type, but raising the pen is a movement that drives the curser a bit away from the textfield. So it losts focus and I type into the void.

Same for selecting text: If you move just a bit to far away from the text the selection ends and you can copy what you want → the clipboard is empty. I am often so fast that I recognise it when already switched to the other app where I want to paste the (for instance) layer name into and just paste empty letters or the former content is still there.

You need to be a sniper to select and write text or numbers in Substance Painter (and I am really good with sniper rifles, btw): Click into the textfield, or drag your selection, and under no circumstances move the cursor till you have finished entering the value or text.