I have a run-of-the-mill Sharepoint list.
I used the Customize Form option and it brought up Canvas app designer for me to customize my form.
To keep it simple, I change ONLY the background color on the Canvas app form.
Clicked "Return to Sharepoint", where it prompted me to save/publish the form.
Upon returning to Sharepoint, I clicked "New" -- it ignored my custom Canvas App form.
It's there.... if I choose Modify Custom Form it pulls it up.
I've tried clicking Use Default Form, then clicking Customize form, and it brings up the form I created.
How can I get my Sharepoint list to recognize the custom form I've created?