I have my main panel on the right side of the screen, default setting (preserve its space, not overlap/auto hide etc).
Now when attaching a second monitor and setting it to th right of the screen with the panel, maximizing windows (any program) on the left (primary) screen leads them do go below the right side panel instead of fitting to the usual space.

Reproducible: Always

Steps to Reproduce:
1. Set a panel with default setting to the right
2. Attach second screen
3. Set it as secondary screen, move it to the right of primary
4. Maximize any window on the primary (left) screen
5. See the window to go below the panel, as it should not

Actual Results:  
Maximized window border does not recognize the panel and goes below it.

Expected Results:  
Window shoulr respect panel size and location and maximized window width should match screen - panel width.