Card popup location off screen - when maximized

I'm using Wekan version 6.99.7 and today when I click on a card the location of the popup is occuring top left of the page - instead of top left of the screen. When this happens I can't scroll up to get to the popup.

This only happens, if in a card, I have clicked on the 'Maximize Card' button. The issue then happens when clicking on different cards. If the card is at the top of the screen - the popup appears maximised (ie normal). If the card is low - more than a screen down - when you click on it the popup is happening 'off screen'. The fix is to click on 'Minimize Card' on the popup. This returns the behavour of the popup to appear on the top left of the screen (not page).

A video of the issue: https://www.youtube.com/watch?v=4EeVZhnBIF8