@Valentin93 this is actually already available today, you can click on the comment icon in the toolbar (top right) to view the sidebar with the comments!See the "Useful Tips" section under "Comment in PDF files" on https://support.mozilla.org/kb/view...
Thanks for the idea @Kurniawan, this is along the lines of https://connect.mozilla.org/t5/ideas/have-the-possibility-to-make-a-feedback-about-a-wrong/idi-p/44205, which we have started investigating. You idea would also allow us to crowdsource sample...
@graviton the feature is usable by opening the "about:translations" page. We have recently made various improvements to this page, and we are currently working on making it even better and on making it more discoverable.
