When I insert an external URL using Attach File -> Insert URL the pasted link gets changed (Double Encoding?) and does not work.
All pre-existing lExternal Links still work.
The problem seemed to start around version 3.2.50 or just after.
Details:
I paste in the URL part of which is:
dir=%2FTest%20MDownload%2F2022&files=Test%202022%2005%20File.pdf
but when click on the resulting Download Button I get an error (document not found). I copied the Download Button link, and found that the same part of the URL has changed to:
dir=%252FTest%2520Download%252F2022&files=Test%25202022%252005%2520File.pdf
I looked it up on the web and several sites stated that the added 25 after the % is due to the URL being double encoded.
I created a new wordpress page with just a button with the same URL and it works correctly – it just does not work with Download Manager.
Version 3.2.53 stated Changelog stated that a problem with inserting an external link was fixed – so I just updated to it and got the same error.