When I am working in vi there pop up things that look like uninterpreted escape sequences. They come for example when I type 'i' to enter insert mode, or 'esc' to leave it

Example, triggered by typing 'i' immediately followed by 'esc': [>4;m[>4;2m

Version: $ vi --version VIM - Vi IMproved 8.1 (2018 May 18, compiled Apr 15 2020 06:40:31) Included patches: 1-2269

This has begun a couple of weeks ago, I suspect it comes from patching the Ubuntu operating system. I can clean them with ctrl-L (redraw screen) but they restart popping up as soon as I resume typing.

Guessing that the sequences might try to switch colors, I already applied all the known tricks to disable colors, it makes no difference. The version installed does not even support the "syntax on/off" (which I find no hardship :) )

Here's my .vimrc:

set nohlsearch
set t_Co=0
highlight LineNr NONE
hi CursorLine NONE
hi Normal cterm=none ctermfg=none ctermbg=none

When I am working in vi there pop up things that look like uninterpreted escape sequences. They come for example when I type i to enter insert mode, or ESC to leave it

Example, triggered by typing i immediately followed by ESC: [>4;m[>4;2m

Version:

vi --version
VIM - Vi IMproved 8.1 (2018 May 18, compiled Apr 15 2020 06:40:31)
Included patches: 1-2269

This has begun a couple of weeks ago, I suspect it comes from patching the Ubuntu operating system. I can clean them with CTRL+L (redraw screen) but they restart popping up as soon as I resume typing.

Guessing that the sequences might try to switch colors, I already applied all the known tricks to disable colors, it makes no difference. The version installed does not even support the syntax on/off (which I find no hardship :) )

Here's my .vimrc:

set nohlsearch
set t_Co=0
highlight LineNr NONE
hi CursorLine NONE
hi Normal cterm=none ctermfg=none ctermbg=none