(1st June 2017, 15:17)RealPTR Wrote: I'm sure I tried turn on/ turn off trick, at least in the system settings. Where did you flip the switch? System settings or somewhere in Kate's settings?If you want to set spell checking globally for Kate, open Kate:
In the Menubar: Settings>Configure Kate>Editing>Spellcheck and tick the box Automatic spell checking by default
If you want to toggle Spellchecking on and off you can use the shortcut Control+Shift+O.
Hope this helps.