dolphin dataloss on move from ftp to local directory

[AZ]

I used dolphin to cut & paste files from my android phone (FTP Server Pro) to a local directory (ext4). Some files were copied, but then there was a kde notification saying "move ... failed". Not all files were copied to local, but all files were deleted from the phone.

I'd have expected that due to the error, either no files or only successfully copied files would have been removed, so no dataloss would have happened.

Description: Ubuntu 20.04.1 LTS
Release: 20.04

dolphin:
  Installiert: 4:19.12.3-0ubuntu1
  Installationskandidat: 4:19.12.3-0ubuntu1
  Versionstabelle:
 *** 4:19.12.3-0ubuntu1 500
        500 http://ftp.tu-ilmenau.de/mirror/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: dolphin 4:19.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Tue Nov 24 18:03:58 2020
SourcePackage: dolphin
UpgradeStatus: Upgraded to focal on 2020-10-11 (43 days ago)