Yes I left out a few details.
Zimbra version is as it appears in my profile.
Client system is Windows 2000 all patches applied.
Firefox 3.0.3.
MS Office 97 all patches.
or
Client system is Open SuSE 10.3
OpenOffice version 2.3.0
Firefox 3.0.3
Neither will accept copy paste fomatiing into Zimbra web client html enabled docked or undocked.
WINE NOT involved, all native applications.
Text formatting is simply ignored in html mode in Firefox in these two cases.
Firefox has no plugins installed other than default stuff. Try underlining and bold as well, they will get dropped, not just font size.
Bug Filed
#32716