Files considered as changed if autosave-option is disabled

[Zeh Emm]

After disabling the autosave-on-change-feature in Scratch previously saved (aka stored) files are marked as changed.
Ctrl-s etc do not work (why should it?) and I get a "save/discard-changes"-dialog on closing.

I am able to ctrl-s when I actually do a change.

I had a few files wich acted like expected but I can't see a pattern if it depends on filetype or so.

[Zeh Emm (clme-g)]

Steps to reproduce:
open scratch, click the clog-icon, settings, disable 'save after change' (or similar, I only have German installed), open any file

[blubberlutsch (blubberlutsch)]

This happens to me every time a text file is opened

-Turn off auto save
-Open non-empty text file, do not make changes
-Close text file
-'Save changes?' dialog appears

[Benjamin Carlisle (la.myrf.)]

Also affects me.

* "Save files when changed" is turned off
* Clicking "New file" to make an empty file does not prompt me to save changes when closing the un-edited empty file
* However, if I open any file that has already been changed, then close it (without having made any changes at all), I get the "Save changes?" dialog