When pressing control-shift-e, editing pops into focus - but each key press causes another instance of a LLM selection toggle to appear.
Got this behavior in Zen Browser 1.7b (Firefox 134.0.1) (64-bit) and Edge Version 132.0.2957.115 (Official build) (64-bit).

The bug seems to be visual only as submitting the prompt works just fine. The LLM selection is applied based on the first instance of the toggle.