Toolbar Icons not displayed correctly (Adwaita Theme)

[ziermmar]

Show/Hide (Left|Bottom|Right) Pane Icons are not displayed when using the adwaita theme.
Komodo IDE 9.2 / 9.3 on gnome 3.18.

(Default Theme, icons diplayed properly)

(Adwaita Theme, white boxes instead of icons)

[Naatan]

Very peculiar, thanks for reporting!