Editor behaving strangely (can't enter >, quotes only accept one character)

hi there,
lately (i can't say for how long... not THAT long) my IDEA (2019.1.4 (UE) Build #IU-191.8026.42) is behaving really strange

on SOME occasions, i can't enter > (shift + <, german keyboard layout). i didn't yet find out how and when it doesn't work (sometimes it does, often it doesn't), it seems to kind of depent where in a project i am (Vue Component file atm)

additionally, quotes are inserted to accept only one character lately.

i write class="  

it's autocompleted to class="" (like it should), but as soon as i type one letter, my caret jumps out of the string and some double-quotes are there...

i've made a gif kind of showing both problems

i don't remember changing any relevant settings (or any at all, for that matter) lately.

can anyone help me with this?

thanks in advance :)