I keep meaning to report this too. (v14.3 6de3540).
It's the same for any app. Or at least, any that I've previously tried, Maps and Drive being two examples. However, I've just tried to reproduce it again, and I can't, so maybe there's something else in the mix that sometimes gets in the way of it working? (But see below for more info.)
When it was happening, I could CREATE the shortcut, and it MAY even have worked briefly, but (after moving it to a folder, and maybe in other circumstances), I would then get a toast message to say "Shortcut disabled" (I still have some Maps shortcuts that I created a few weeks ago that I haven't got around to recreating manually where I still get that message).
I can't remember whether this happened when they were on my home screen, but certainly as soon as the shortcut is moved to a folder, it'll stop working. Moving it back out of the folder doesn't fix it. I CAN manually create working shortcuts in a folder - whether I start there, or create them on the homepage and then drag into a folder.
Separate issue with icon sizes for Sheet shortcuts
Also, when creating some shortcuts, either manually or from within an app (e.g. to a Sheet in Google Drive), the icon for it is way too large on my home screen (although it's fine if I move it into a folder). This may be because my home screen is set to 5 columns x 6 rows. My icons in my folders are smaller than the ones on my home screen, but it does seem to adjust the shortcut's size in folders to match the others in there. If I move the shortcut back out again, it's bigger than all the others again.
In contrast, shortcuts created for Maps navigation have an icon size that matches the others on my home page.
All of this has been done on both my (Android One) Nokia 8.1, running Android 10 and on my Xiaomi Mi Max 3, running Android 9.0