UPDATE: It's a physical/hardware issue. I did some more plugging and unplugging and tried the live disk. It's my wireless keyboard and mouse. I'm still not sure what the cause is since they were running fine.

At some point in October or early November, my Cinnamon desktop started acting up.

Whenever I press the "Ctrl" key on the laptop keyboard or the Bluetooth one, it starts zooming in, if the program has that capacity. For example, it does it in LibreOffice and Firefox but not Terminal or Nicotine+.

I checked the keyboard shortcuts and bindings but I didn't see any issues there.

At the same time, the mouse/trackpad is misbehaving. This is much more frustrating because it's inconsistent and challenging to recreate.

The easiest example to use is Nicotine+. When I click on a tab, it scrolls through the previous tabs until it gets to the main one.

It won't happen in other programs with tabbed screens, but I'll get a similar behavior in some drop-down boxes or using autofill - the list won't remain open. I'll click to open and it opens for a split second.

I don't have a ton of additional programs and I don't get into the nuts and bolts - I only run the recommended updates. I don't know of anything that changed.

I have a Debian USB ready to go in case I can't get anywhere with this. I'm also posting this in a couple of Mint forums.

My print bed is having heating issues. The "internal" bed is only heating up to 57-58C while the "external" is heating up to any temperature I set it to.

All the wiring I can see is intact and snug. The printer hasn't been dropped or anything like that.

I did a factory reset and the issue was still present. I updated all the firmware and still had the issue.

I'm pretty sure something is wrong on the inside but this is my first printer and I have no idea what I'd be looking at/for once I start taking it apart.

Any advice, links to tutorials, et cetera, will be appreciated.