Hi 

Thanks for reporting the bug to AutoDesk.

Further to the Ortho mode issue I have noticed other serious issues with AutoCAd Lt for Mac 2020.  To the extent that I have had to uninstall and revert back to 2018 version which I was using before.

I'd like to be able to be more specific however the problems were just slowness really.  For example moving round the drawing and zooming in and out of the drawing, changing commands, moving between DWG files all resulted in the 'Wheel'.  It was if the software was too much for the mac to cope with.  

I made sure to download all the hot fixes etc etc as per your advice on this forum and my Mac OS Catalina  operating system is up to date. 

To be honest this is not the first time this has happened over the years with new versions and it is extremely frustrating given the cost of the product.

Many thanks,