New file command issue when "." in filename

[Rvo]

When inserting a new file in a directory (using right-click; new; eg. "Text document") the name is rejected when using a "." (dot) in a filename.
For example, insert a Text document in the "new file window from FC" you insert "test v12.1.01" as file name.
This results in a new text document named "test v12.1.TXT" (everything after the last "." (.1) is ingored)
("test v12.1" results in "test v12.TXT")

Same issue with other types of files...