Literally an hour ago, I just realized that ComposerButtonBonanza (CBB) is broken in WYSIWYG-Composer. (Or, perhaps, it is the other way around.) We do not use WYSIWYG on the site that I maintain, so I never noticed! So… ugh.
(Not a fan of WYSIWYG. MediaWiki (e.g., wikipedia) put a lot of effort into a WYSIWYG editor a decade+ ago, thinking it would encourage more people to become editors. It ended up making no difference, and they could not get rid of the original editor anyway because there are so many things you can’t really accomplish with the WYSIWYG version, and it ends up just being generally kind of clunky compared to the original wikicode+preview editor.)
Hmm… indpendently of CBB… if I insert a spoiler in the WYSIWYG-Composer, and then click outside of the spoiler-box to edit elsewhere, it permanently blurs itself and I do not seem to be able to edit the spoiler text again …unless I switch to Markdown-mode. Am I missing something, or is that just a bug in WYSIWYG-mode?
…Oh, nevermind! If I triple-click (out of frustration and/or boredom) then I can edit the spoiler text again! (Not a fan of WYSIWYG-mode; did I mention that already?)