[dolphin] [Bug 464921] New: Overwrite larger newer file on fat32 deletes contents

[IJK98email at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=464921

            Bug ID: 464921
           Summary: Overwrite larger newer file on fat32 deletes contents
    Classification: Applications
           Product: dolphin
           Version: 20.12.2
          Platform: Debian stable
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: IJK98email at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
When I try to overwrite a larger file with a smaller one
on fat32 micro SDcard, Dolphin deletes contents of file. After reinserting the
sdcard, it becomes noticeable.

STEPS TO REPRODUCE
1. Have hard drive formatted as btrfs, exfat, ext4, or anything, and sdcard
formatted as fat32.
2. Make text file "config.txt" on hard drive and edit with Kate so it has "less
text\n"
3. Make text file "config.txt" on fat32 sdcard and edit with Kate so it has
"whatever text\n"
4. Drag and drop from hard drive to sdcard, select copy here, and overwrite.
5. It appears it has worked, but reinsert sdcard and open "config.txt" file on
sdcard with Kate and it is empty "".

I have two hard drives with btrfs and exfat and they both did same thing. Also
I am using Vivitar sdcard reader MOV416-WHT.

OBSERVED RESULT
 Open "config.txt" file on sdcard with Kate and it is empty ""

EXPECTED RESULT
 Open "config.txt" file on sdcard with Kate and it should have "less text\n"

SOFTWARE/OS VERSIONS
Linux/KDE Plasma:  Debian
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version:  5.78.0
Qt Version: 5.15.2
Kernal version: 5.10.0-21-rt-amd64

ADDITIONAL INFORMATION
Albert Astals Cid tried to replicate the bug, but couldn't. So it is just me.
:(

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