For the past week or two, since the last system updates installed, Firefox (79.0) does not remember any history even whet set to do so. More importantly, I cannot add new bookmarks: whether I click on the add-bookmark star icon or use the keyboard command (Ctrl+D), it results in no action at all. Also, I am no longer able to resize the browser display other than toggling between maximize and the default "restore down" size: when I move the cursor over any edge of the display, it no longer becomes a double-sided arrow and no longer responds to the usual click-and-drag action to expand or reduce the size.
Has anyone else experienced glitches like these and been able to solve them?
The Elementary version I am running is 0.4.1 Loki.