I'm on Windows 10, using a Cintiq 22HD (released in 2012)
i've restored wacom user preferences to their initial settings, and windows ink is disabled.

I've recently been facing an issue with keyboard input

Basically what happens is that certain inputs just won't register, i'm pushing the "space" key on my keyboard and moving it around.
And as i release the key, the hand tool is still active, while i'm expecting my cursor to return to a brush tool, so instead of drawing a stroke, i move the canvas again by accident

In some cases, i'll be using the eraser tool, and as i push the brush shortcut to get back to drawing lines, the input won't register, and i'm stuck with the eraser tool, i have to push my brush shortcut again and again until it works.

This issue occurs with every tool, in every situation

I'm gonna try to figure out if it has anything to do with my keyboard because it's a wireless one, so it's very possible that clipstudio isn't the culprit here.
However, i've not seen this issue happen in any other software, so i'm suspicious.

If anyone else has been having this problem, i'd be glad to hear about it, hoping you found some sort of fix.