File extension ending with spaces [fixed]

[bdeshi]

If I want to rename "file.txt" to

"file.txt  "

, filename collision prompt comes up.
If "overwrite" is selected, "system cannot find the file specified" keeps popping up. Now refresh, and the file is gone forever!
("suffix" renames successfully to

"file-001.txt  "

, although renaming this suffixed file again has the same problem)

Now, I know it's Windows' own problem, but shouldn't XY handle the situation with more safety?

More importantly, can anyone tell me how to get the file back?

[admin]

If I want to rename "file.txt" to

"file.txt  "

, filename collision prompt comes up.

How do you do this? I fail to get any prompt...

[bdeshi]

For the lack of a pc nearby, key sequence:
CTRL+SHIFT+n, f,i,l,e, ENTER, F2, END, SPC, SPC, ENTER, (collision dialog should be here) LEFT, ENTER, (overwrite prompt) ENTER, (file not found msg) ENTER, ESC, F5. file.txt disappears. For the other case, repeat and select suffix.

[admin]

It does not happen here. No collision dialog.

Can anybody repro this?

[bdeshi]

Here's a screencap. Sorry for the huge size...
EDIT:since the problem was fixed, removed said huge screencap.

[LittleBiG]

It does not happen here. No collision dialog.

Can anybody repro this?

Nope. Win7x64

[admin]

Got it: It's the totally undocumented RenameAllowLeadingSpaces tweak. It has a bug. Fix comes.

[bdeshi]

to all bugs: resistance is futile...

Meanwhile, any way to get back the lost files?

[admin]

No, they are gone. Unless you have "recuva" or something similar.

[bdeshi]

Alright, I've recovered the file.
I didn't think for once it was just deleted was so sure the file system ate them.

Thanks again!

[admin]

The next beta will handle those beasts with more grace.