fix: unicode replacement string android crash#3540
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isekovanic merged 2 commits intodevelopfrom Apr 8, 2026
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## 🎯 Goal This PR fixes an Android crash in message rendering caused by the Unicode object replacement character (`U+FFFC`) reaching the markdown pipeline. The fix sanitizes message text before markdown generation by normalizing `U+FFFC` to whitespace and treating fully empty results as empty content. Should resolve [this issue](https://getstream.zendesk.com/agent/tickets/79676?brand_id=360003144254). ## 🛠 Implementation details <!-- Provide a description of the implementation --> ## 🎨 UI Changes <!-- Add relevant screenshots --> <details> <summary>iOS</summary> <table> <thead> <tr> <td>Before</td> <td>After</td> </tr> </thead> <tbody> <tr> <td> <!--<img src="" /> --> </td> <td> <!--<img src="" /> --> </td> </tr> </tbody> </table> </details> <details> <summary>Android</summary> <table> <thead> <tr> <td>Before</td> <td>After</td> </tr> </thead> <tbody> <tr> <td> <!--<img src="" /> --> </td> <td> <!--<img src="" /> --> </td> </tr> </tbody> </table> </details> ## 🧪 Testing <!-- Explain how this change can be tested (or why it can't be tested) --> ## ☑️ Checklist - [ ] I have signed the [Stream CLA](https://docs.google.com/forms/d/e/1FAIpQLScFKsKkAJI7mhCr7K9rEIOpqIDThrWxuvxnwUq2XkHyG154vQ/viewform) (required) - [ ] PR targets the `develop` branch - [ ] Documentation is updated - [ ] New code is tested in main example apps, including all possible scenarios - [ ] SampleApp iOS and Android - [ ] Expo iOS and Android
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🎯 Goal
This PR fixes an Android crash in message rendering caused by the Unicode object replacement character (
U+FFFC) reaching the markdown pipeline.The fix sanitizes message text before markdown generation by normalizing
U+FFFCto whitespace and treating fully empty results as empty content.Should resolve this issue.
🛠 Implementation details
🎨 UI Changes
iOS
Android
🧪 Testing
☑️ Checklist
developbranch