I would like to run my userscripts on sidebar messengers (whatsapp, twitter, messenger).

Tampermonkey can run my scripts in the current tab but not on the left sidebar messengers.

Is there a solution for this?

This is not only limited with Tampermonkey as well. Other extensions are also not running in those sidebar messengers.

@depitrox which script are you using for instagram? may be I can add a modification for other scripts too.

I would like to run my userscripts on sidebar messengers (whatsapp, twitter, messenger).

Tampermonkey can run my scripts in the current tab but not on the left sidebar messengers.

Is there a solution for this?

This is not only limited with Tampermonkey as well. Other extensions are also not running in those sidebar messengers.