well I may have made a mistake similar to yours, I did remember to correct for daylight savings but it had the wrong utc correction , so it was off by an hour.
The mount must not spontaneously do a flip by itself. It must be passive, and allow Ekos to attempt the flip when Ekos thinks it is time. The mount can have an hour angle tracking limit that will stop tracking if the mount has not flipped. That limit needs to be sufficiently past the meridian that there is time for the flip to be attempted.
Exactly where the mount flips is up to it and as Jo found if the time settings are wrong the mount may flip later or earlier than expected. Indi/Ekos doesn't seem to handle DST well so you may have to leave DST set to zero and adjust the time zone to compensate.
One way to tell is to do a quick align, then slew to somewhere clear of the pole and do a solve. If the solved position is a long way out in Ra then you probably have a time problem. The sync may correct for this but no changes the mount position where the flip is done.
Ekos is trying to do a flip but it fails. Jasem says the fix for this is coming in a few days.
“ So the fix for this is almost done, there is now about 99% coverage for the meridian side determination which is necessary for a meridian flip. Hopefully within a few days.”