I'm having some issues when using the default Norwegian keyboard layout under Plasma/KWin 5.12.4. 

When pressing the keys right of the 'Æ' and 'Å' keys [1] together with Alt-GR or Shift in order to get some of the special characters, Spectacle is opened instead. I've checked System Settings and the 'Start Screenshot Tool' shortcut is not set. The same happens with the key left of backspace. The cursor changes to the + one and when I click the mouse button, spectacle appears with the captured screenshot.

This makes it impossible to type these keys: ~ ^ ´ `

Note that when uninstalling spectacle, these keys still behave strangely. I cannot use the default means of Shift/Alt-GR + Key and then press space to make the character appear alone. Instead I have to press the Shift/Alt-GR + Key combo twice before pressing space to make it appear.


[1] - https://en.wikipedia.org/wiki/File:Keyboard_Layout_Norwegian.png