timebounds.minTime not set in the generated transaction XDR

[orbitlens]

Steps to reproduce:

• Open laboratory with these settings
• Note: Time Bounds -> Min Time value set in the editor
• Check generated XDR
• XDR viewer shows timeBounds.minTime = 0
• Expected to see timeBounds.minTime = 1653145481

Environment: Chrome 88.0.4324.150 on Windows

[janewang]

This is fixed in old-lab.stellar.org and lab.stellar.org. Closing this ticket.