Description:
Using Libreoffice 5.4.5 in KDE Plasma 5.8.8/Frameworks 5.36 the File Open/Save dialogs throw up error messages like the below, as well as failing to load properly (the dialogs don't show any file or directories).
"Unable to save bookmarks in /home/tim/.local/share/user-places.xbel. Reported error was: Unable to open temporary file. Error was: 5.. This error message will only be shown once. The cause of the error needs to be fixed as quickly as possible, which is most likely a full hard drive."

See screenshot for how the file dialog looks

Workaround:
I found this is caused by the libreoffice-kde package somehow. If I remove this package and instead install libreoffice-gtk3 then the issue is worked around. I'm on Ubuntu 16.04

Steps to Reproduce:
1.Open Libreoffice (doesn't matter whether Calc, Writer etc) on KDE with libreoffice-kde installed
2.File->Open or File->Save

Actual Results:  
File dialog is broken, shows error messages and cannot see any files or folders

Expected Results:
File open/save dialog works


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 5.4.5.1
Build ID: 1:5.4.5-0ubuntu0.16.04.1~lo1
CPU threads: 4; OS: unknown; UI render: default; VCL: gtk3; 
Locale: en-AU (en_AU.UTF-8); Calc: group


User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0