Summarizing: without qt5-beta-proper PPA chevron size is correct, with it chevron is a bit too large, and with height: 0.82*sourceSize.height for the chevron image in TabBarStyle.qml, the chevron is huge.
Summarizing: without qt5-beta-proper PPA chevron size is correct, with it chevron is a bit too large, and with height: 0.82*sourceSize .height for the chevron image in TabBarStyle.qml, the chevron is huge.