Changing model on previously sent prompts causes modal overflow

When changing the model on an previously sent prompt, the model selection modal does not display correctly on screen or browser that is scaled 1.5-2 times. The modal overflows the viewport, causing part of the modal to become inaccessible:

• Top of the page, the modal overflows downwards, hiding the bottom of modal.

• Bottom of the page, the modal overflows upwards, hiding the top of the modal.

This behavior does not occur with new prompts, where the modal correctly fits within the viewport.