libreoffice doesn't remember file-open dialog size

I use lubuntu-18.10 and the open file dialog doesn't open the window at the last size it was.

Version: 6.1.2.1
Build ID: 1:6.1.2-0ubuntu1.1
CPU threads: 8; OS: Linux 4.18; UI render: default; VCL: gtk3_kde5;
Locale: en-CA (en_CA.UTF-8); Calc: group threaded