Writing text in HTML module inputs lots of characters at once?

Hi,

Sometimes when I type something, like “123” into an html module it comes out as: “123121” instead. So each character gets replicated several times.

I have no idea what causes this. I can provide a video if needed!

Has anyone else experienced this?

It also seems to happen when duplicating modules. I duplicate a module and sometimes 2-4 appear at once. If I publish, they go away. So it’s only inside the editor.