It’s a little weird and probably not that common, but I realized that if you accidentally click a field that is in the process of being disabled you lose the ability to interact with the interface. Clicking with the mouse or the keyboard does not work.
The video shows me hitting delete on the name entry and quickly clicking the mouse over the value entry which by then gets disabled.
I thought td froze, but you actually can hit tab or shift tab to get out of it. Weird. No idea why I did this in the first place…