In general, bug designation is reserved for core code base. The TitleLeaf development team is continually updating server operating systems, programming languages, web frameworks et al to ensure this core code works with new devices and browsers. I consider your TitleLeaf subscription compensation to maintain this core code. If some part of that code isn’t working properly, the team will resolve it without cost to you.
This is in contrast to a client's public user interface (aka, your ecommerce skin/theme) which is not designated as core code. A theme is created per a time-limited, contractual setup agreement. The code is created then becomes your property “as-is” upon contract completion (normally, triggered by site launch).
To adjust the theme, you can submit a service request. You will be charged for the time needed to address said request.
There are no guarantees that the original theme code or the adjustments will function properly in perpetuity.
I try to ensure themes are as robust as possible without making costs prohibitive. It’s certainly a trade-off. My ultimate goal is to provide services for competitive prices and reasonable expectations.