rsx11m wrote:No need to change the manifest, but did you remember to change the preference
before installing the modified chrome.xpi?
rsx11m wrote:To allow chrome.xpi install "the old way", go into about:config and toggle extensions.alwaysUnpack so that it becomes "true", then the userChrome.xml file can go into the "chrome" folder again and is properly found there.
You guessed right, the xpi file was packed, so I had to unistall the "User Chrome 1" extension, toggle that setting and install chrome.xpi again.
It works now, but the Lightning (Calendar) tabs and all others in the Mail window are affected, if your code is used in userChrome.css. To avoid this (in SeaMonkey only) #browser must be added.
Code: Select all
#browser .tabbrowser-tabs {
-moz-binding: url("chrome://userchrome/content/userChrome.xml#tabbrowser-tabs-noscroll") !important;
}