Apple has released iOS 12.1.3 beta 4 to developers for testing. The build number is 16D5039a.
The new firmware contains bug fixes and improvements, including:
Resolved Issues: Resolved an issue where some user interface elements were inaccessible to VoiceOver in the “Electrocardiogram (ECG)” and “Irregular Heart Rhythm Notification” sections in Health > Health Data > Heart. (46505168)
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