This is one of those fun, ultra-niche bugs. So what I'm trying to do is:

Copy-paste a Callout with text inside to the TOP of a template, by clicking somewhere on the template and holding the ⬆️ (up-arrow) key to get my text cursor to the top of the page.

Currently, the first block on the page is a layout element, and inside the first block is an image element that does NOT have an image assigned yet.

When my text cursor is as far back as it can be on the page, and I press Ctrl + V, I paste the text contained in the callout inside the empty image block. I've included a screenshot to show what I am seeing. Refreshing the page does remove the text from the image block, but does not put the callout in place as intended.

I'm using Windows + Vivaldi (which is based on Chromium).

Have fun with this one :)