Kanban Pop-up version 11.3.1

Hello,
I allow myself to post this topic here, because I encounter a problem on the KanBan of Projeqtor version 11.3.1. Indeed, when we scroll the Kanban window to access the right column, we right-click on the tickets (large or non-large display), the popup window appears randomly on the screen. Which is not very pleasant to use. The test below was carried out on the DEMO site version.
thank you.