Sandboxed Thunderbird won't open email links

I have Thunderbird version 68.6.0 (32-bit) & Chrome version 80.0.3987.149 (Official Build) (64-bit). When I open Thunderbird in Sandboxie, links in any email don't work...nothing happens...whether Chrome is already open or not. If I open Thunderbird outside of Sandboxie, I have no problem opening links. (I might get a message that they think it's a scam, but I can override that warning).

Any ideas on how to solve this?

Thanks in advance!