Clock icon next to some apps on macOS Mojave

Question

Notice the clock or piece-of-pie icons next to 3 of the apps in this screenshot of the Finder. The icon has been there for two days. All three apps work; I have used each of them.

➥ What does that icon mean?

➥ Is it a problem? What can I do to fix it?

Using macOS Mojave 10.14.5 on a Mac mini (2018).

Answer 1

Bug

Apparently, the icons where caused by an innocuous bug.

After restarting the Mac mini, the icons were gone.

Answer 2

I think those application are auto downloading any update or one of the downloading process has disturbed previously. Because of that the downloaded status is displayed as a % of the total download with that clock mark. You can see it with your self by simply adding a new download intentionally.