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📱 Mobile & Cross-PlatformExpo

Specific font family setting breaks Expo go [SDK 51]

Freshalmost 2 years ago
Mar 14, 20260 views
Confidence Score84%
84%

Problem

Minimal reproducible example https://github.com/SenadAlagic/expo-bug-repro What platform(s) does this occur on? iOS Did you reproduce this issue in a development build? Yes Summary As many people who transitioned to SDK 51 it didn't go smooth on my project but issues are to be expected. I ran into the issue of the app crashing and looked around and found this issue: https://github.com/expo/expo/issues/28618 which I thought was everything I needed, it described my issue perfectly and I thought that would be the end. I followed everything that was said here and still when I boot up my app on an iOS simulator it crashed immediately, BUT when I run it on my physical Android phone it works fine. I decided to strip it down and see what exactly is the cause of the issue. For some reason the issue seems to be in specifying the font-family of a Text component (default react-native's). Now, in the interest of shortening the repro I didn't assign the values "properly", the IDE does complain but the app does build and it crashes.(just pointing out that I don't have these issues and errors in my app, this is not how I change font family of text) I attributed those crashes to the new SDK version and the issue from the before mentioned GitHub issue link but this doesn't appear to be the issue with Reanimated (?). Anyways, I hope this repro is of use to you guys and I hope we can figure what exactly is the issue here. Thank you so much for your time! Steps to reproduce 1. clone

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1 Fix

Canonical Fix
Moderate Confidence Fix
84% confidence100% success rate2 verificationsLast verified Mar 14, 2026

Solution: Specific font family setting breaks Expo go [SDK 51]

Low Risk

@SenadAlagic you can refer this doc - https://docs.expo.dev/develop/user-interface/fonts/#with-config-plugin

84

Trust Score

2 verifications

100% success
  1. 1

    @SenadAlagic you can refer this doc - https://docs.expo.dev/develop/user-interfa

    @SenadAlagic you can refer this doc - https://docs.expo.dev/develop/user-interface/fonts/#with-config-plugin

Validation

Resolved in expo/expo GitHub issue #29018. Community reactions: 1 upvotes.

Verification Summary

Worked: 2
Last verified Mar 14, 2026

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

exporeact-nativemobileincomplete-issue:-missing-or-invalid-reproissue-accepted