When using Firefox to highlight PDFs the toolbox for the highlighting tool covers the text of the paper I am trying to read. This happens in fullscreen-mode (as shown on the screenshot) and in normal viewing mode. It would be much more convenient if the toolbox would only show when hovering above the highlighter symbol (or if I had the option to untoggle the toolbox). To the right hand side there is still space in 100% zoom. Another solution would be to flip the toolbox window so that it would show more to the right hand side below the other tools.
I am using Firefox 135.0.1 (64-Bit) on my Windows 11 (64-Bit) Laptop. My display is set to 1920x1080.