Help with Firefox drag icons

Hi, I'm 99% sure this is a Firefox issue as it only started when my browser version updated earlier this week, but I'm hoping someone may be able to help.

Every one of my tasks now has a 'draggable' icon overlaying it which is very distracting and completely in the way. I've tried various searches on Google for instructions on how to remove it but can't seem to find a solution. Any tips please?

Example task:

Even more annoying is when I click on a task and the WeekPlan icons pop up above it, I'm unable to click on the delete button as the draggable icon from the task above is overlaying the delete button!

Many thanks,

Paul