Ever since the most recent firefox update, the reading list has completely ceased to function and now I cannot add anything to the reading list. Adding anything to the list appears to be added to the list while it is open but the total is not updated closing it and opening it again shows that it was not added

CORRECTION: After some checking, I have realized that, after clearing my reading list, full functionality has returned, but the exported version of my reading list can no longer be imported. I am still leaving a low review since as far as i can tell one of the updates corrupted the file or otherwise rendered it unusable and now i'll have to skim through the file manually to get each link back.

EDIT 2: I don't recall my github login information but i am using Windows 10, and Firefox version 89.0. I would like to add that I had some minor issues before hand, which in retrospect might have been the result of the add-on having been updated for the new Firefox version before I had actually downloaded the new version, as the menu accessible from the toolbar would not display, and the icon in the search bar would not function. After updating to the newest Firefox Version, the issues I mentioned beforehand began. I would like to add that, as I woke up this morning, I noticed that the Reading List had somehow failed again, and would neither display any sites nor allow me to add any, and the space next to the All and Unread tabs was completely empty, with no number displayed at all. This ceased when I reset everything again, but If this occurs independently of Updates this would be particularly concerning.