[Affinity publisher keyboard bugs & Crashes V. 1.10.142 Windows 10]

I have used Affinity Publisher for many years now form Quark express. I have now experienced a number of crashes using this version.  I do a lot of original typed work and normaly use the American keyboard. However in this version it crashes everytime you backspace or double click using the mouse. I have also notice that Ctrl + Shift does not work. I use this a lot because I open template files. The Ctrl on its own with P, I ect still work.