You need to specify a width for the column which contains the equations. This will use "m" type for the row which will work. You can find a sample .lyx file attached which worked for me in Lyx 2.3 (Ubuntu 20.04)
** Attachment added: "Working eqnarray within tabular" https://bugs.launchpad.net/ubuntu/+source/lyx/+bug/151110/+attachment/5436391/+files/okTabular.lyx -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/151110 Title: any multiline equation inside a table in Lyx 1.50 breaks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lyx/+bug/151110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
