OkHttp 5.3.2 fails with ProtocolException: Unexpected status line when client app leaks Response objects. The problem did not exist in 4.12 and may be related to this "Very small behavior change".

Java 26, due in March with structured concurrency, lazy constants, AOT object caching, and primitive types in patterns, instanceof, and switch, has entered a second rampdown phase for bug fixes. Java ...