### Version Media3 1.4.0 and beyond. ### More version details **Issue doesn't happen in 1.3.1. and before** ### Devices that reproduce the issue issue can be reproduced on all Android devices we tested: amazon FireTV stick 4K, for example. ### Devices that do not reproduce the issue _No response_ ### Reproducible in the demo app? Yes ### Reproduction steps - Launch exoplayer demo app - choose the test content (sent email to android-media-github@google.com) - Turn on CC: Click "SELECT TRACKS" --> TEXT --> "Unknown" - Streaming for a couple of minutes - ### Expected result Stream should play without issue ### Actual result streaming will be freezing in a couple of minutes. ### Media will send content in email. ### Bug Report - [X] You will email the zip file produced by `adb bugreport` to android-media-github@google.com after filing this issue.