updated readme

README.md

@@ -19,7 +19,8 @@ the previous codebase (which is feature incomplete), visit the
 [zona-go](https://git.ficd.sh/ficd/zona-go) repository.
 
 For an example of a website built with zona, please see
-[ficd.sh](https://ficd.sh).
+[ficd.sh](https://ficd.sh). For a list of known problems, see
+[Known Problems](#known-problems).
 
 <!--toc:start-->
 
@@ -44,6 +45,7 @@ For an example of a website built with zona, please see
   - [Sitemap](#sitemap)
   - [Ignore List](#ignore-list)
   - [Drafts](#drafts)
+- [Known Problems](#known-problems)
 
 <!--toc:end-->
 
@@ -441,3 +443,13 @@ the `--draft` flag is specified.
 
 [Ashen]: https://codeberg.com/ficd/ashen
 [Pygments]: https://pygments.org/
+
+## Known Problems
+
+1. If the user triggers rebuilds in quick succession, the browser is sent the
+   reload command after the first build, even though a second build may be
+   underway. This results in a `404` page being served, and the user needs to
+   manually refresh the browser page.
+
+   **Mitigation:** Don't allow a rebuild until the browser has re-connected to
+   the WebSocket after the first reload.