Obsidian URL does not work reliably

Hello,

I have had the experience several times that Obsidian URLs that have been inserted into other apps such as Notes, Things etc. do not lead to the desired Obsidian document when called up.
The error message “Document not found” appears.

If I then copy the Obsidian URL again and paste it into the same app, it works.
If I compare the two URLs exactly, they are absolutely identical.

Is there possibly an explanation for this?

Many thanks
Guenter