I'm wondering where those Canadian keyboards are used. I live in Canada, have seen plenty of multilingual keyboards, and have seen those symbols perhaps once. Even so I can't be sure it was on a keyboard. I just recognized one of the symbols.
https://f.toi.sh/fr-ca-mbp.jpg (Pardon the dust!! You never really look too closely as your keyboard until you have to take a picture of it eh?)
Tab, capslock, shift, backspace, and return are all symbols-only. I feel like I have a pretty good ambient understanding of what they mean at a glance so I think I've always seen them on fr-CA layouts I've used.
Was trying to communicate to a designer in Ontario a while ago that we could use the backspace symbol for a correction key in a PIN entry view. We were working on an iOS application so I was immediately thinking that the apple default UI font would have exactly that "chevron with a cross" symbol styled how it looks on the keyboard somewhere in it. Designer was pretty confused about it though, so I think it's probably just fr-CA keyboards.
I'm willing to bet that more than 99% of the Canadian Multilingual CSA keyboards on PCs are used by public servants. There is another (French Canadian)layout that is much more common among consumers.
Of course, the Mac side is different, having somehow chosen to align with the (IMO superior) CSA layout.
Which province? Because I've never seen the CSA keyboard used here in Alberta, but it's also not terribly surprising that the Albertan government has poor support for French.