New Windows 10 Insider Preview Fast Build 18323 (19H1) - Jan. 24 Insider

Anyone lose icons on the taskbar? On my laptop they still highlight and work even though they don't show. I haven't tried my desktop.

@Winuser, that's a known issue and has been around (for some) for roughly three builds. Restarting the shell (or the system, though that takes longer) will get you back to normal.

rseiler said:

@Winuser, that's a known issue and has been around (for some) for roughly three builds. Restarting the shell (or the system, though that takes longer) will get you back to normal.

Thanks! I did a restart and all is back to normal.

The slow-app issue, which many have been seeing randomly since 18317, has now been "collected," which means it's a thing and not imaginary:
Feedback Hub - Windows Insider

Major clue in the comments: Windows Insider Service, which isn't even normally started (it's triggered). But sure enough, during one of the 30 or 45-second waits, I noticed that the service had started. When I stopped it, the program that I had run earlier immediately started....

Feels a little jankier than I had hoped

Windows Insider Service shows stopped on both of mine.

Kari said:

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Kari said:

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Cool, I'm not the only one!