Lock aspect ratio icon confusing

[eobet]

Question: What does this icon mean?

 

In affinity, that is unlocked (even though it's a chain... so "unlinked", I guess), which seems crazy.

Only after you click on it, do you see that they actually add *another* few lines to tie it together.

 

I mean, the natural thing to do would be to do something like this:

 

This issue feels similar to this thread:

And also, this almost invisible icon:

 

 

 

Why does it seem as if Affinity didn't really think their smaller icons through?