What do you get from a 10+ year old open source framework, thousands of users within a wide range of roles, and complexity? A JIRA instance with over 3,000 unresolved tickets ;). Is that number indicative of low software quality? Definitely not. But therein lies the problem. A vast majority of the tickets are no longer issues, no longer relevant, or duplicates. Due to the quantity, it became nearly impossible to weed through them all.
Shortly after releasing ORM 4.3.2.Final and 4.2.9.Final a critical regression was found, caused by HHH-8961 and reverted/corrected by HHH-9010. Instead of creating service-pack builds, we decided to simply release the next versions.