Seen Posts may not dim posts on soft refresh

Confirmed (dependent upon certain internal account flags; not everyone will experience this quite yet).

This is an interesting one; in essence, Tumblr has updated its navigation to be smarter, and that includes not destroying and recreating posts that aren't changed in that case, which is normally a good thing for performance. For the sake of this feature we want to behave as though the refreshed timeline actually disappeared and reappeared, presumably; I'll have to look at some internal stuff to see how easily we can do that.

(#1294 does not help with this, annoyingly.)

Edit: Worse, it's only some posts that are not destroyed and recreated (easy test: [...document.querySelectorAll('*')].forEach(el => { el.dataset.test = ''; })). This is probably a subtle effect of/bug in the "timeline v2" code, but that code is so complicated that I don't think I'd be able to discern what is happening if assigned to adjust it.

Edit 2: Interestingly, this isn't happening for me at the moment on the dashboard; not sure if Tumblr devs are tweaking things or if the exact specifics of the behavior in question only result in posts persisting through the refresh some of the time. it's complicated

AprilSylph / XKit-Rewritten

Seen Posts may not dim posts on soft refresh #1539

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