Description
The highlight line of the active/selected CTabFolder item is not positioned correctly when the monitor zoom is not 100%.
For example, on 150% it looks like this (with and without theming):

You see the white area left to above the line, which should not be there.

Reproduction
To reproduce, simply use a 150% monitor, start an SDK and look at the editor tabs.

Expected Behavior
The highlight line shall be properly drawn for every zoom. This applies to both the Platform UI's enhanced CTabRendering as well as when only using SWT's CTabFolderRenderer (when theming is disabled). So the behavior should be checked with both renderers, i.e., with and without theming.
In particular, it shall be ensured that tab icons do not touch the highlight line, such as icon for a Manifest editor tab does when theming is disabled:

Necessary configuration:
150% monitor (or higher)