I cannot reproduce it, works for me on Windows 7.
Please provide your 7+ Taskbar Tweaker options and your taskbar properties, so I could try and reproduce it with your settings.

Please try the most recent beta version.

Implemented as an advanced option in v4.5.4.2 beta.

Please see my reply here:
http://rammichael.com/7-taskbar-tweaker/comment-pa...

Hmm, seems like you're right, I fixed "Switch to", but not "Minimize".
Please try the most recent beta.

I believe that I could reproduce and fix the issue.
Please try the new beta version.

How can I reproduce the issue?
What application are you trying it with?
What OS are you using? (Windows 8, right?)
Do you have any other tweaking tools, such as a custom start menu?

Maybe I'll rework the GUI one day... :)