Terminal not cleaning lines

Question

I'm working on a remote Ubuntu 20.10 machine [linux version 5.8.0-1011-gcp] in Google Cloud, built from a basic Ubuntu image, using gnu bash 5.0.17(1)-release and xterm 353, and the terminal isn't clearing lines:

• I've tried with an empty .bashrc, as well as the default upon user creation:
  • $TERM values:

    local (no tmux) - xterm-color
    local (   tmux) - screen-256color
    
    local (no tmux) - remote (no tmux) - xterm-color
    local (no tmux) - remote (   tmux) - screen
    
    local (   tmux) - remote (no tmux) - screen-256color
    local (   tmux) - remote (   tmux) - screen
    

  • Terminal output:

    # Before pressing Enter and typing "dog":
      cd dir_cat
      cd dir_2
      reset
    
    # After pressing Enter and typing "dog":
      dogdir_cat
      cd dir_2
      reset
    
    # Expected behavior after pressing Enter and typing "dog":
      dog
    

If I use tmux, I still get the same behavior, albeit less problematic than when I don't use it, however vim has the same issue; as such, I would fundamentally infer screen has the issue too

• tmux:
  When I use tmux, I do so after logging into the remote, and am not using tmux on local machine.
  • If I log into the remote and immediately start tmux, both in-shell and when using vim, I am not affected by the issue; however, if I open vim outside of tmux, then tmux starts experiencing the issue (normal shell and when using vim within it)
    
    
• vim:
  Scrolling in vim also shows issues like the above, but I assume if clear/reset are fixed, then this possibly gets fixed too
  • I've tried getting rid of .vimrc, but it changed nothing
    
    
• Clear, reset, printf '\[e[:
  These and all other workarounds found via a Google search do not work, with the issue not being limited to clear/reset, so please do not provide workarounds for clear/reset, as I need to fix the underlying issue