Window / Cross selection not working on Trim or Extend tool

Recently updated to Draftsight Standard 2022 SP4. I am no longer able to use the window or cross selection on the second selection for both trim and extend tools. I can window / cross select the cutting / boundary edges, but then I can only single select lines to be trimmed or extended. If I try and window / cross select these, the tool fails and reports <> in the Command Window. This is getting very frustrating and adds a fair amount of time when there is a lot to trim.
Any help greatly appreciated.