If you tap a kanban card and hold, then that card jumps to the top.
In addition, inconsistently, some columns as a whole get selected with a gray background and not responding to any interaction.
Unfortunately, I’m not able to reproduce the issue.
If you set custom HTML content of Kanban card, it may interfere with the require event handlers.
If you are able to reproduce the problem in the online demo, please let me know how.