Sometimes, I can't edit the amount of a card in a deck or collection any more using Chrome. When I click on the number, nothing happens. Also, the dropdown menu on each card (where it says Move to sideboard etc.) won't open any more.
This doesn't happen always, and F5 will fix the problem if it does. I'm thinking this might be some kind of race condition in script initialization or something?

Looks like this is caused, in part, by my popup blocker. When I disable it entirely, the popups (also happens for login, searching inventory and probably everything else that changes the UI) will show up. When I allow the site to show popups in the extension, it still won't. So I'm left wondering what weird interaction happens here that makes my blocker think your features are popups?