> This page is for Developer.

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.bigcommerce.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.bigcommerce.com/_mcp/server.

## Cornerstone 4.12.1 for November 12, 2020

**Theme**

* Write a Review modal cause TypeError. [#1899](https://github.com/bigcommerce/cornerstone/pull/1899)

* Account >Payment Methods throws server error when using Cornerstone theme [#1898](https://github.com/bigcommerce/cornerstone/pull/1898)

* Price in the cart is not updated when changing currency on mobile. [#1893](https://github.com/bigcommerce/cornerstone/pull/1893)