bash history mixed between different terminal

[jgato]

Hi I love this tool, but not it is mixing the story between all the terminals.
So, when I move up in the historic on a terminal A, I see the commands I have recently executed on terminal B. This is not the usual behaivour.

I guess it is because of the hopt -s histappend , is it oka to remove this line from the basrc? or, it would affect other features of hstr?