Report Viewer Visual Studio 2010

My default browser is chrome. Clicking on any hyperlink in a spreadsheet opens chrome. This is not so for LibreOffice offline help. Pressing F1 opens in the Edge browser.
This would not be serious if it was not for the search box which does nothing in edge.
Copying the link into chrome and all works.
So, why does F1 use Edge as it is not the default brower?
I am using Windows 10 64 bit. LibreOffice is 6.2.0.3 x64