Baj,
Thanks for documenting – I’m getting a rush of nostalgia for my MTG days! I’ve fantasized about building TW sites for my EDH decks, but it’s a waning hobby now that my teenager has moved on. 🥲
I think the Shiraz plugin’s multicol features build in some similar wrapping to avoid display issues. You might check it out for various quick and powerful display options. I find that its careful GUI toolkit it frees up my time to focus on the content more.
Meanwhile, you might benefit from knowing that as the discussion community migrates to the https://talk.tiddlywiki.org/ forum, any code in your post risks getting lost. I’ve come to google groups to post this quick reply, but a helpful convention is to stick your code between tick marks like so: <div style="width:100%"></div> to avoid what looks like mysterious gaps in your post just where you want to share the technical details!
-Springer