The hack introduced in rainbow_csv#handle_buffer_enter() of the plugin rainbow_csv on July 1st 2019 (ugly hacks) disables all syntax elements when reentering the Bufexplorer buffer by executing the BufEnter autocommand and therein
execute "set ft=" . ft_hack
because Bufexplorer has not defined a FileType autocommand.
An easy fix for me was to add the autocommand
autocmd FileType bufexplorer call s:SetupSyntax()
to the augroup BufExplorer and remove the call s:SetupSyntax() from the function s:DisplayBufferList().
The hack introduced in rainbow_csv#handle_buffer_enter() of the plugin rainbow_csv on July 1st 2019 (ugly hacks) disables all syntax elements when reentering the Bufexplorer buffer by executing the BufEnter autocommand and therein
because Bufexplorer has not defined a FileType autocommand.
An easy fix for me was to add the autocommand
to the augroup BufExplorer and remove the call s:SetupSyntax() from the function s:DisplayBufferList().