hello, can you try to replicate this behaviour when you launch firefox in safe mode once? if not, maybe an addon is interfering here Troubleshoot extensions.
posted by st4evr 4 years ago Gray Box At The Bottom of the Window. One day I opened Firefox and it started up with the gray box at the bottom of the window as .
I tried to update to Firefox RC 1 and when I realized all of my extensions don't work Once doing so, a large horizontal gray bar showed up on the bottom of.