I recently experienced this issue, and found no solution on googling it. I noticed too that others had the same issue. Having just experienced and fixed it again, here ar… (read more)
I recently experienced this issue, and found no solution on googling it. I noticed too that others had the same issue. Having just experienced and fixed it again, here are my observations;
Cause: I have my Firefox set to remember last session. Occasionally, I X out of my main window not realising that there was an ad popup underneath (even though I use adblock). These ads, for whatever reason, have the ability to hide the bookmarks toolbar in their window. That means when you close and reopen, even if you went to a normal site, the bookmarks stay off. It will persist through reinstalls and all kinds of workarounds in my experience.
Fix: Refresh Firefox. Click the Three lines, Help, then Troubleshooting Information. Here you can manually refresh firefox, and it will open with your bookmarks showing again (and a few minor cosmetic things go to default, so you may have to re-tick menu bar and customise how you like your main buttons to look etc). I didn't try this with anything other than having one tab open on google the last time it happened to me.
Not a question, but hopefully useful for anyone who has experienced this, wasn't sure where else to put it.