Can not change file/document name of new downloaded document before saving

Before Windows 10 version 1903 became available, when downloading a new document/file, such as a bank/credit card statement or any kind of document/statement, I could change the name of the file/document before saving it(I change the name so it is in the same format of all the other documents/statements in the same documents file location.

Now, after I installed Windows 10 version 1903, when I try to change the name the file/document all I get is random numbers/letters or special characters and not the name that I try to name the new file/document.

Now, the only way to change the name of the file/document is to save the file/document with what ever name it came with in the initial download and then go back to the location where I save the file/document, click on file/folder, click on rename and rename the file/document to the name I wanted at the initial download.

This is double the work that I have to do now since Windows 10 version 1903 came out.

This also applies to programs, apps, doesn't matter what I try to change the name to, all I get is random numbers/letters or special characters.