[Bug] Notepad++ problems with saving extensions for Session and Workspace files

[Avaray]

Im using Win 8.1 64bit and Notepad++ 32bit.
I tested it with v 7.3.3 and v 6.9.2.

In 7.3.3 Im trying to save Session (File > Save Session).
Im naming file and choosing extension from list. And it is not saving that extension. I need to write extension manually.
And when Im trying to save Workspace there is no extension to choose at all.

In 6.9.2 it gives extension for Session file, but for Workspace file there is the same problem like in 7.3.3.