Yes, I could reproduce this. Seems like an (accidental?) feature.
If you're asking whether it's possible to "just" put back the tray icons on your main monitor, than the answer is no. The main taskbar and the secondary taskbars work in a different way. Even though they look the same, and use the same task list, the outer controls (i.e. the taskbar itself) have different code bases. That's why they require different tricks to remove the width limit.

See my comment here:
http://rammichael.com/7-taskbar-tweaker-v4-2/comme...
Basically, seems like Comodo doesn't allow the tweaker to modify explorer's memory. Try whitelisting the tweaker, and if that doesn't work, please contact the Comodo team.

Closing as a duplicate.
http://tweaker.userecho.com/topic/382920-after-wak...

Closing as a duplicate.

Closing due to a lack of feedback.

Implemented in the most recent beta version.
http://rammichael.com/7-taskbar-tweaker#download

Should be fixed in the latest beta version, please try it.
http://rammichael.com/7-taskbar-tweaker#download

A duplicate of:
http://tweaker.userecho.com/topic/453357-prevent-c...
Please see my reply there.

This is an issue of Chrome, and I don't plan to implement a workaround for it.
A but report I found on their tracker:
https://code.google.com/p/chromium/issues/detail?id=350713

Windows allows you switch between the two by holding the Shift key.
If you want more customization, it's possible with the advanced options. See help for more details.