Redmine

Since upgrading to version 3.2.0, we noticed that some email clients are receiving email notification with what appears to be verify small fonts. We have this same issue on 3 distincts redmine installations recently upgrade from 3.1.2 to 3.2.0 (and other are reporting the same problem, cf. Redmine 3.2.0 released).

It seems that r15026 results in fonts too big in some email clients (tested in latest Zimbra Web Client 8.6.0, latest Thunderbird 38.5.1 and with Gmail). Could this issue be related to r14541 or r14540 or some other changes in 3.2.0?

• With Redmine 3.1.2 everything was fine in all clients (see redmine-3.1.2-thunderbird.png and redmine-3.1.2-zimbra.png)
• With vanilla Redmine 3.2.0 everything is too small in Zimbra even though mailer.html.erb is the same as in 3.1.2 (see redmine-3.2.0-zimbra.png)
• With the patch r15026 to mailer.html.erb in 3.2.0 everything is too big in all clients (see redmine-3.2.0-thunderbird-patch21487.png and redmine-3.2.0-zimbra-patch21487.png)

P.S. This was first posted in #21487-7 but it's probably not the best place to do so, since the ticket is closed.