Our support agents use ticket templates and canned responses very often when creating an email to the customer.
When creating a new email in the Mint version the signature is added by default, like we prefer. However, after selecting a ticket template or canned response the signature is removed. No matter if the cursor is located in front or below the position of the signature when selecting the template/canned response.
Would be helpful if it simply stays available.
Is this related to a Marketplace App you are using or building? If not then, this is probably not the right forum for the problem. May I request you to create a ticket for the same and have someone follow up from the Support team?