Hi Lai, the proper way to post a potential bug is to open an issue on GitHub. Alternatively you can write me an e-mail. But either way I'd need more details than "it doesn't work", because cross-session-non-persistence of highlights can have multiple reasons - one of them simply being that you haven't saved your highlights. Disappearing highlights on non-active tabs could be the result of those tabs having reloaded (without you having saved your highlights) or the corresponding page did some re-rendering programmatically. Please also note that - as you probably have guessed already - your experience is not the same as for most users, so in order to find out what is going wrong it would be helpful for you, me and potentially for other users to post a bug report with some details as described above - a review is not the right place for it. Please also note: Not every unexpected behavior is due to a bug. If you don't like to open an account on GitHub you can simply e-mail me and I will do my best to help. Here are some infos that would probably be of help in order to resolve the problem: What is your saving setting (autosave or manually); in case you saved your highlights, does a corresponding entry show up on Textmarker's history page? Did you see error notifications? Are there entries on Textmarker's error logs page? On which websites did you use Textmarker unsuccessfully?