I believe it’s fine to close it; I switched back to my other machine and for some reason, the problem can’t be recreated today, it just magically disappeared somehow. Sorry to have bothered you with something that turned out to be not an issue in the first place.
I’m working on a different computer today and everything seems to be fine on Firefox.
We did test with both Firefox and Chrome (on the other device) before and had the erroneous behavior shown in the screenshots in both browsers. I guess we’ll have to do some more investigating on our end, but thank you for taking a look!