I have proton pass extension (v1.34.2) installed in Orion Version 1.0.8 (147.1), WebKit 625.1.8 on MacOS.
When clicking on a password field, the pop-up has missing parts. If only one password is available, it can still be used because the clicking on the pop-up works. But if more than one password is available, I cannot distinguish between them.

To have the pop-up completely visible.
Version 1.0.8 (147.1), WebKit 625.1.8 MacOS