Hexchat text spacing disformed after recent updates

Ubuntu 22.04 development branch @ 15/04/2022 with kernel 5.15.0-25-generic

After recent updates (i suspect yaru-theme) my hexchat text spacing
looks changed with too less spacing at the bottom nearby the chat area

Things i have tested to influence this: (on a hexchat with Mono 14 as font)

*maximizing hexchat window makes the text less space (with dock at bottom)
*minimizing to a smaller window makes text spacing look better (with dock at bottom)

*maximizing hexchat window with dock at left, gives too much spacing
*minimizing to a smaller window makes text look better (with dock at left)

*on hexchat font Mono 16 space gap grows wider (with dock at bottom)

*testing on hexchat with channels in tree-view can also influence spacing with maximized vs minimized smaller window

Attaching screenshots with a Mono 14 with dock at bottom + left

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: yaru-theme-gtk 22.04.4
ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30
Uname: Linux 5.15.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 15 05:17:28 2022
PackageArchitecture: all
SourcePackage: yaru-theme
UpgradeStatus: No upgrade log present (probably fresh install)