Firefox app always opens a new tab when clicking on a link

Hi! So I have been using the firefox app on my ipad air for a while now and in the last few weeks the following issue has turned up: Regularly, but not always, the app opens a new tab any time I click on a link. Example: I use moodle for work and each time I want to get somewhere in my moodle classes, a new tab opens. When I give the app a fresh start, the issue resolves for a while but returns eventually. I have no idea why but I have to say that it is quite annoying when you have to scrool through tabs all the time. Hopefully, you will be able to help me out. Thank your for taking the time to understand my issue! Sandra