There is a fix in the editor to fix link selection (see
_fixLinkMutatedElements). Prior to this commit, in mass mailing
the main editable element had the class `o_not_editable`.
This class on the editable disabled the link fix.
Also, it was semantically strange to have the editable being
`o_not_editable`.
Task-2684360
closesodoo/odoo#79934
X-original-commit: 112f3776985fbe8f5291cd4d26424f6c427ff36c
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>
Nicolas Bayet
f2b9960677