when i am looking at History, flat view, left click only selects first two files

[japlong]

When I am looking at History, and I have either of the flatView styles selected,

I can only use the "left" click button on my mouse to select the first two files.

Other files can be selected with the "right" or control click

I notice that this is not even consistent.

Just irritating, 

any suggestions ?  THANKS, Judy

Mac, Sonoma 14.4.1

SourceTree Version 4.2.7 (263)