STEPS TO REPRODUCE 1. Open dolphin on a usb device with a vfat filesystem. --- Sansa clip in my case. --- /dev/sdb on /media/mark/0123-4567 type vfat (rw,nosuid,nodev,relatime,uid=7180,gid=9030,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2) 2. Drag a URL from another app. (tried with both kaggregator and QuiteRSS) such as: https://dts.podtrac.com/redirect.mp3/chrt.fm/track/35917C/d2h6a3ly6ooodw.cloudfront.net/reasontv_audio_8200596.mp3 OBSERVED RESULT Dolphin refuses immediately (without any download time) to copy with the following error message: "Cannot transfer file:///media/mark/0123-4567/PODCASTS/default.mp3 because it is too large. The destination filesystem only supports files up to 4GiB" EXPECTED RESULT I would expect that Dolphin begins downloading the file and continues downloading it until it runs out of space on the device. NOTE: There is space on the device. I can manually copy the url using wget to the filesystem. NOTE: This bug just surfaced as I upgraded from Ubuntu18.04 to Ubuntu20.04. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Ubuntu20.04 Linux (x86_64) release 5.4.0-124-generic (available in About System) KDE Plasma Version: 5.18.8 KDE Frameworks Version: Qt Version: 5.12.8 ADDITIONAL INFORMATION