Zooming in and out of the image did not change the size of the tool trays but zooming in and out of the browser does seem to work, however this also makes the text really small and zooms everything else out as well. This fix is fine for now but it would be great if Roboflow could add an option to move/hide the trays.
I like the feature request about being able to move the tool trays around! In the meantime, besides zooming the browser, did you notice that partially hidden behind your tool tray (but appearing to still be accessible) are image zoom buttons? I use those and then pan the image and am able to be more precise with my annotations that way - and get them out from behind the tray.