SUMMARY
I tried to share multiple URLs from Fenix mobile at once. On my desktop, I see only a single tab opening with all URLs stiched together into one string, opening only one tab in my web browser.

STEPS TO REPRODUCE
0. Have KDE connect installed on an android smartphone
1. Open Firefox Mobile (fenix) on the same android phone
2. Open multiple tabs in firefox mobile
3. Have connection between KDE connect on smartphone and desktop running
4. In Firefox mobile, open tab overview (list of tabs) by clicking on the number
5. In Firefox mobile's tab overview, click the three-dots menu. Click "Share all tabs"
6. In the share screen, select KDE connect
7. In KDE connect, select the desktop PC
8. On the desktop PC, watch the browser window open

OBSERVED RESULT
Firefox (my standard browser on the desktop) opens a single URL, which – depending on the URL – probably fails to load. In step 8, the browser is opened with the commandline argument "[URL0]%0A%0A[URL1]%0A%0A[URL2]"


EXPECTED RESULT
Open a tab per URL, i.e. if I share 3 tabs through KDE connect, I want to have 3 URLs opened on my desktop browser.


SOFTWARE/OS VERSIONS
Windows: (untested)
macOS: (untested)
Linux/KDE Plasma: Fedora 33 x86_64
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15
KDE connect: 20.08.1-1.fc33


ADDITIONAL INFORMATION
If you for example share the URLs with Signal (on the smartphone) instead of KDE connect in step 6, the URLs are separated by two newlines: "[URL0]\n\n[URL1]\n\n[URL2]". This is known (and maybe a bug in Firefox): https://github.com/mozilla-mobile/fenix/issues/4178
Anyway, if KDE connect gets this shared URL with line feed characters (`\n`) in it, it should not turn the line feed characters into `%0A`. Or is this the format it gets the URLs? I don't know.


Idea:
Would it be possible that KDE connect turns the `\n` characters into spaces? This should solve the issue for sharing with Firefox desktop at least.