Thanks for your reply.
LOL - I disabled Thunderbrowse after putting up my original post thinking it might be the culprit. The problem occurs regardless of Thunderbrowse (with Thunderbrowse uninstalled, clicking Open as List opens a blank page). Net-net, with ONLY MoreLayouts enabled, the problem exists.
First thing to do is to make sure you're seeing the Open as list feature. It's a standard Thunderbird feature. You can see in this image from the
Mozilla Thunderbird Features web page:Here's a screenshot from my own installation showing search results with "Open as List" circled.
Give it a poke. Depending on the search result, Open as List just opens a blank page. Tab back over to your Inbox and change the view from Stacked View to one of the native views (e.g. Classic View). Then tab back over to the search results and click Open as List again. Voila. Works every time.
How can I make Open as List work with Stacked view is selected?