I'll second both of those thoughts - thanks to Steven for reporting them and that this may be a good place to organize these kinds of concerns.
1. The first issue I believe is resolved by running UPDCUR from the SYS: directory to update several affected LITs: COPY, ERASE, DIR, PRINT, HEAD, TAIL. (The issue wasn't specific to CMD/DO files -- any command line with leading spaces would have exhibited the behavior. It's just that much more unusual for people to actually type leading spaces in the front of a command line.)
2. The change in the DIR format goes back to May 2019 when the size limits were increased on AMOS-style filename, from 10.3 to 72.8 in
A-Shell 6.5.1662. As part of that, the standard DIR output format expanded, by default, to allow 4 character extensions such as HTML, JSON, XLSX, etc. which were becoming a lot more common.
3. I haven't been able to reproduce the trailing "I1" garbage here, possibly because it was fixed in a prior DIR update, or possibly because it is sensitive to a specific set of directory contents. (Steven: if you still get this problem after doing the UPDCUR update, please send me an actual DIR command line and the output results, along with another DIR listing of the entire directory.)