Application Workarounds
Below are Workarounds for misbehaving applications.
If you are unfamiliar with creating Rules, see this detailed example to base your new rule.

Full-screen Re-size Error
and gVim, when maximized (full-screen mode) and under certain conditions may encounter window re-sizing issues - see Emacs window resizes ... A Rule will work-around the issue.
Assuming an window is open:
Use Detect Window Properties and select the window. Match only by primary class name so leave the check boxes unchecked - for additional information see window matching
Clicking OK in the previous window back-fills the results in the Window Matching tab. Enter a meaningful text in the Description text box:
Ignore 's full-screen request by enabling the Obey geometry restrictions attribute, toggling it to off (No) to ignore and selecting the Force parameter:
Click through to complete entry of the rule.