The upgrade of single file wikis seems slightly slower than it used to be; now it takes noticeable couple of seconds to finish, whereas for the older versions (tested it v5.3.6 > v5.3.8 right now) it was almost instantaneous. Not a problem for me at this scale, but I wanted to point it out just in case this is a sign of some inefficiencies that could make problems with bigger wikis.
I notice the same thing. For one of my wikis, it took about 20 seconds between the time I dropped the wiki onto the upgrader and the time the table labeled: “The following tiddlers will be included in the upgrade” appeared.
Dropping that same 5.3.8 wiki onto the 5.3.8 upgrader had that table appear within about 2 seconds. Maybe that isn’t a fair test since it doesn’t involve an upgrade, but I would think the import mechanism still needs to perform the same functions.
I’ve seen on Github that there was another related PR that is already merged into the prerelease. I’ve tested the prerelease upgrader and it is alright now!