Possible Eshell/Tramp Bug in Emacs 26

[Jay Kamat <jaygkamat@gmail.com>]

Hi!

I'm not entirely sure if this is a problem on my end or not, so just to
be safe, I'm sending this to help-gnu-emacs rather than emacs-devel, if
this is an actual bug, feel free to forward this there.

On emacs 25:

1. Start emacs -Q
2. Evaluate (require 'em-tramp)
3. M-x eshell
4. run 'sudo ls'
5. after logging in via tramp, output of ls is displayed correctly 

On emacs 26 (d24ec5854098841388dfecf2c668e7f48f348af0):

1. Start emacs -Q
2. Evaluate (require 'em-tramp)
3. M-x eshell
4. run 'sudo ls'
5. after logging in via tramp, output of ls is:

'ls: No such file or directory'.

Can anyone else reproduce this as well, or is this just me (or has there
been a relevant recent change)? I can try to bisect this if that would
be useful.

Thanks,
-Jay