GTK theme elements are sized incorrectly

[klarazetka]

Expected behaviour

Marco should display GTK themes as they originally were on version 1.24 and prior - for example, TraditionalOk's top window bar should be 24px high, whereas with Nimbus (default theme in OpenIndiana) it should be 25px high. The same applies to other elements - for instance, Caja's "location" text box was 25px high using the Nimbus theme in MATE 1.24.

Actual behaviour

Sometime around the release of version 1.26 or 1.28, the size of various theme elements has mysteriously increased - elements suddenly have excessive amounts of vertical padding around them, with TraditionalOk's top window bar having increased to 26px high, Nimbus's top bar having increased to 28px, and Caja's location bar in Nimbus having increased to a whopping 38px. While unsure about TraditionalOk, the Nimbus theme has not changed at all in the meantime - the files are the same, yet 1.28's manner of displaying this theme has regressed. This issue appears theme-independent and does not only affect the built-in themes (hence I'm opening this issue in this repo, rather than mate-themes). I also doubt this is a GTK-wide issue - while not particularly concrete evidence, my Xfce-using friends have not reported any changes in how their themes are displayed.


Obviously ignore the font differences in the above screenshots, the same behavior occurs with all tested fonts (Arial, Helvetica, Verdana, IBM Plex Sans, even Comic Sans)...

Steps to reproduce the behaviour

Download a GTK theme and apply it in an older version of MATE, then apply the same theme in 1.28.

MATE general version

1.28

Package version

1.28.1-2 (Arch repos)

Linux Distribution

Appears distro-independent. Reproduced on Debian Sid, Arch Linux, and even Slackware. (all x86_64)

Link to bugreport of your Distribution (requirement)

omw to report it on a gajillion distros :p

[klarazetka]

nevermind, it's GTK's fault :)