It seems the task bar gap has been reintroduced. (see attached picture)
I had this during the 6.0 betas and it was gone around the 6.0 final, but I am not sure when exectly.

Now since 7.0.0 beta 3 it seems this bug is back.

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Zefiris

Its the primary (Windows) Taskbar.

This gap reappeared right after installing the 7.0.0 beta 3 so I thought it was DF related, but uninstalling DF didn't help.
Searching the net for that taskbar gap showed a few other people also have that problem, but no one can reproduce it, as it disappears and reappears randomly.

For now it might not be a problem of DF but maybe you can keep an eye on it.

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Zefiris

PS: Uninstalling DF 7.0.0 beta 4 didn't remove the menu entries in the desktop right-click menu. They are still there after restart, with the windows default icon and of cause without function.