Also just a note that although I am using a git version, nothing has changed in numbered bookmarks since before 1.36. @Davidy22 This kind of indicates its in your system since it works here, just to check, please post the GTK/Glib versions from `Help->Debug messages` like I did, its not clear where you got the versions you mentioned, unless its actually what Geany prints it may not be what Geany is using since GTK2 is still present on Mint.