Not sure why you quoted the bit you did as it isn't relevant to your issue.

Firstly you seem to have drawn your edges on top of the closed group.

The edges within the group have tiny stay ends at he corners of the circles, remove them and the faces will form. The second one with the triangle shows that it would have been better if you had imported at a larger size, I skipped it in the gif but you can joint the corner to the next vertex in the circle and delete the extra triangle.

You've posted this in the premium section again, so it limits who sees it.

Speechless.

I can't think of one that projects on the x/y but here's an option.

Sandbox.

No plugin needed, simple intersect.

Sorry, my comments were not really addressed to you Scozzarella, they were more of a general thing because people often get confused by the contextual shortcuts.
Your issue is something else and as I'm not a Mac user I can add nothing more than has already been said.

I'll just add this to help people understand that the shortcuts list in preferences is context specific.
You can see when I filter by edit with nothing in the model selected the list is quite short but when I select a simple group the list of possible shortcuts grows considerably.

As mentioned above You must have something explodable selected for the native explode to appear in the shortcuts.

How many threads are you planing to start named Lord of the toolbars?

It is currently being updated almost daily.

Perhaps there could be a method to link an animation to a scene so that it runs when the scene is activated.

Rich moved it for you.

You need someone with moderator powers. Not me I'm afraid.

You posted this in the Premium members only General Discussion forum. Not that many people will see it.

Thanks Gents, I'll get back to normal eventually. Just frustrating to not be able to do things you take for granted.

laid up at the moment and can't really use my computer effectively. So a bit of fun SUbD one handed flat on my back using a touchpad. A blend of a plague mask influenced by the alien in Prometheus.

Here's a link to the post where Anton mentions the problem and solution, for anyone coming along looking for more info.
https://sketchucation.com/forums/viewtopic.php?f=323&t=69485&p=679424#p679424

It depends on the mathematical accuracy, if it's just a simple thing you could use Taper, part of FredoScale.

Something like this.

I'm not suggesting it is a solution to what you are asking for, simply a way to address your example.