Can't access WebDirect Database Filenames using spaces in URL(vs %20)?

If you have a database file name with spaces in it, FileMaker properly displays in the WebDirect landing screen and you can launch the file.

If you link to it with %20's in the name, it properly loads the database.

If you link to it with spaces instead of %20's it breaks as it either just hangs or comes back with database not available error. Presumably because it's looking for the database name up to the first space.

Most webservers seem to automatically either redirect or swap out the spaces with %20  as if you access a file say http://myserver.com/test file.html it automatically converts it to http://myserver.com/test%20file.html

FM 15 Webdirect doesn't do this and due to the change in functionality of a webpart in SharePoint 2013 that we use, you CAN'T enter links with %20 in them as it converts them to spaces which in this case breaks the link.

Of course the obvious fix is to rename the database files but due to the number of databases, the numerous links to this database and the file relationships, it's a bit of work.   And we don't want to customize an out of box SharePoint web part.     My simple questions are:

• Is this a bug or a feature?
• Is there any obvious workaround on the FM server side?

Edited August 19, 20169 yr by trevc
clarify version