3.18.4 ====== * Fix thumbnail scaling in window switcher on HiDPI [Florian; #758676] * loginDialog: Update user list on user changes [Michael; #758568] * gdm: Do not allow bypassing disabled Sign In button [Michael; #746180] * Correctly identify VPN secret requests [Lubomir; #760999] Contributors: Michael Catanzaro, Florian Müllner, Lubomir Rintel Translations: Kristjan SCHMIDT [eo], Daniel Korostil [uk], Andika Triwidada [id]