In fact, despite of me bashing the classic theme, in this situation the "modern" theme is the buggy one :)

Look at the following long date:

Now, if you use small icons, the width would stay the same, even if there's no date anymore:

I fixed this bug in v4.2.1, too.

Fixed in v4.2.1.

I'll look at it, although, to be honest, classic theme compatibility is not a priority.

This is not the only issue with the classic theme on recent Windows OSes.

Microsoft surely puts less effort in the classic theme than it puts in the default theme, and I don't see any reason to keep using it.

If your reason is performance, here's a nice article I've stumbled upon recently:

"Adjust visual effects for best performance" should really be called "Adjust visual effects for crappiest appearance"

Hi!

There's a registry option to disable jump lists that appear by dragging.

Set the following DWORD value to 1:
Branch:
HKEY_CURRENT_USER\Software\7 Taskbar Tweaker\OptionsEx
Name:
jump_list_drag_disable

Update: v4.2 has a checkbox for disabling jump lists that appear by dragging.

In v4.2 there's an option to display seconds on the tray clock.

If you are interested in a custom date format, please create a new feedback.