Resize handle not working inside GTK 2 hosts (LV2 build)

[pdesaulniers]

If I run my own build of the v1.0.0 release of Wolf Spectrum inside a GTK 2 host, I am unable to resize the window by dragging the resize handle in the bottom corner. Yet, for some reason, the official Arch build of Wolf Spectrum resizes fine...

[pdesaulniers]

This issue only affects the LV2 build. A workaround would be to hide the resize handle when the UI is user-resizable.

[falkTX]

This is a "known" issue, going all the way down to suil.
DPF stopped using LV2 extensions to do UI resizing, as they were always wrong in the first place (which drobilla agrees with). But suil is yet to be updated to support that behaviour.

LV2 UI resizing should work under Carla though, both from host and plugin side.