Some characters do not work in specific applications (Chromium based)

[jomag]

I use a US layout keyboard, but often need to type Swedish characters (åäö), so I've added this to my hyprland config:

bind = SUPER, bracketleft, exec, wtype å
bind = SUPER_SHIFT, bracketleft, exec, wtype Å
bind = SUPER, apostrophe, exec, wtype ä
bind = SUPER_SHIFT, apostrophe, exec, wtype Ä
bind = SUPER, semicolon, exec, wtype ö 
bind = SUPER_SHIFT, semicolon, exec, wtype Ö

This works in almost every app, except those based on Chromium, including Electron apps such as Slack.

å and Å works even in Chromium apps.

I tried using wtype directly from the console:

sleep 3; wtype ö

... and then quickly switch focus to Slack. No input.

Then I changed to a longer sentence:

sleep 3; wtype "abc-å-ä-ö-def"

Strangely, this works for all characters!

Then I tried with both xä and .ä. xä worked, but .ä enter only the ä character for whatever reason!

So while I could not understand this behavior, it seems like using .ä and .ö could be a workaround. So I changed my Hyprland config - but now, when I type ä or ö I'm moved to workspace 1 instead!

I have two laptops. Both are up-to-date Arch + Hyprland. They share the same dotfiles and should be quite identical. On my second laptop, åäö works as expected in all apps!

Any ideas or explanations to this behavior?