When using the inline event display on Android, the event text intermittently does not show up. This can be reproduced with the SDKAngular example from the 1.4.1 download. Simply run the example, go into the calendar, events, and change the event display to "Inline".
Open an event, the items display properly. Close them. The click to open again. Sometimes, not always, the inline area opens, but the items are not visible (and in my application, clicking where the calendar item would be does not trigger an event).
Attached are screenshots of what it looks like when the items are displayed and when they are not.
I cannot reproduce this issue in iOS, it only seems to happen on Android. Android, I've reproduced it in the emulator, on a Galaxy S4 and on a Galaxy S7.