‘ls -l’ as well as less/more does not work fine on iOS 15.0

I upgrade my iPad 2020 to 15.0 as well as iSH to latest version. But now it does not work fine when I enter the commands such as ‘ls -l’, it hangs or only give summary without files list any more.
The other commands such as ‘less’ / ‘more’ perform same as ‘ls -l’. It seems some extra characters result in the issue.

Reproduce the problem on iOS 15 using `ls -l`, `less`, and `more`, then investigate the reported extra-character behavior. Done means these commands no longer hang and `ls -l` displays the file list correctly.

Written by the indexing model from the issue text.