I'm testing the upcoming GNOME 40 in a virtual machine of Rawhide (development branch of Fedora) x86_64. I'm using the RPM build of HistoryManager Prefix search v12.
Looking Glass shows no error messages for HistoryManager (because the extension hasn't been enabled yet). But in the GNOME Extensions app, there's a red โ warning icon, and the toggle switch to enable HistoryManager is grayed out. If you click the gears icon to see HistoryManager settings, you get a dialog that says "Something went wrong" and the following error message:
Gtk.BuilderError: /usr/share/gnome-shell/extensions/[email protected]/prefs.xml:8:35 Invalid property: GtkBox.margin_left
Stack trace:
_init@/usr/share/gnome-shell/extensions/[email protected]/prefs.js:34:17
wrapper@resource:///org/gnome/gjs/modules/script/_legacy.js:83:27
buildPrefsWidget@/usr/share/gnome-shell/extensions/[email protected]/prefs.js:77:18
_init@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:209:40
OpenExtensionPrefsAsync/<@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:122:28
asyncCallback@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:115:22
run@resource:///org/gnome/Shell/Extensions/js/dbusService.js:177:20
main@resource:///org/gnome/Shell/Extensions/js/main.js:19:13
run@resource:///org/gnome/gjs/modules/script/package.js:206:19
start@resource:///org/gnome/gjs/modules/script/package.js:190:8
@/usr/share/gnome-shell/org.gnome.Shell.Extensions:1:17