After editing a zap in Firefox, and I click on the save button at the bottom of the page, something nothing happens. It's like it only gets focus with my first

After editing a zap in Firefox, and I click on the save button at the bottom of the page, something nothing happens. It's like it only gets focus with my first click. So I have to click a second time for the save button to go and save the zap. Sorry for this type of report that's probably difficult to reproduce.