2.6
. Upload the new WebExtension version for Thunderbird 68 as 3.0
and increase the version number with each new release of the WebExtension as usual. Every time you update the legacy version for Thunderbird 60, pick a version number from the 2.x
branch.-purgecaches
command-line option-purgecaches
command line option when launching Thunderbird will force it to purge the JavaScript cache.chrome/userChrome.js
within your Thunderbird profile directory.nglayout.debug.disable_xul_cache
preference (TB68)nglayout.debug.disable_xul_cache
if it doesn't already exist, set it to true, and restart Thunderbird.