The issue is not easy to reproduce, so the fix is not a guaranteed one.
Estimation: the click on the "send message" buttons happens too early,
and it is either doing nothing, or being immediately reset by another
action that happens at page load.
Adding a little bit of extra delay (in particular waiting for messages
to be loaded) might resolve the issue.
Also back-port code allowing to use contains in tours.
runbot-27847
closesodoo/odoo#144435
X-original-commit: 3b261b6856e935f8fe9d4e23cfddc09df8ff7fdf
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>