This is Bryce. I'm having a similar problem, and am also not noticing anything in the error logs.Server InformationosTicket Versionv1.9.4 (c18eac4)Web Server SoftwareApache/2.2.29 (Unix) mod_ssl/2.2.29 OpenSSL/1.0.1e-fips mod_bwlimited/1.4MySQL Version5.5.40PHP Version5.4.33This was installed using Softaculous, rather than via the zip file from osticket.com.The problem also involves changing the status of a ticket (or multiple tickets) from the Agent panel listing all open tickets, or from the viewing of an individual ticket.When viewing an individual ticket, users are also unable to select a canned response. When they use the dropdown menu for selecting a response, and click on single response available below "Premade Replies", the dropdown menu does not select the premade reply, but still has "Select a canned response" selected.As a workaround, the main support volunteer has been sending response emails directly from Outlook, has not been marking tickets as closed, and has really only relied on the email which OSTIcket 1.9.4 sends to the administrative email address.