Chosen toolbar icons are off center

Icons I have chosen to show in my toolbars with

Customize Tool bar… > Modify > Change icon …

are displaying off center. They are cropped, and pushed down to the right. Any ideas​?

The icons are the right size because some of them are from the icon set (Galaxy) and the two imported ones are 26X26 like the dialog specifies. I had spent the day making my toolbars look almost perfect only to have this happen after a restart. I can even re-choose them and they will look good for a while, but still only last until I restart LibreOffice Writer.

Please report the issue, https://bugs.documentfoundation.org//