Thank you for the suggestion. Closing since it's a duplicate of this topic:

https://tweaker.userecho.com/topics/608-add-delay-before-decombine-on-hover

Fixed in 7+ Taskbar Tweaker v5.8.

Should be fixed for Windows 10 versions 1803, 1809 and 1909 in the latest beta version, 5.7.1.3.

Should be fixed in v5.7.1.3 beta, please try it.

You can get the beta version here.

Do other options work? Are you using small icons? Does the option work with the other setting (small/large icons)?

Can you make your taskbar as narrow as you can, and post a screenshot of it here?

Thanks for the report, but you're commenting on an unrelated topic. Please see the relevant topic here.

Should be fixed for Windows 10 versions 1809 and 1909 in the latest beta version, 5.7.1.2.

Still investigating Windows 10 version 1803 (build 17134.1099).

That's already possible by using advanced options.
Open the Advanced Options Editor (more details), and add the following value to Mouse Button Control:
Name: taskbaritem|rclick
Value: 2

See the help file for more details.

102 is a known issue. Please see my reply here:

http://rammichael.com/7-taskbar-tweaker/comment-page-17#comment-3660