[Progress indicator] Doesn't spin on API level 21 about material-components-android

[pekingme]

Do you mind to provide a minimum repro sample? It animates with no problems in our catalog on API 21 emulator.

[Leonidius20]

Here's what happens with linear progress indicators in the app at https://github.com/Leonidius20/Lugat (you can download apk from the releases section):

On Android 12 (works as intended):

android12.mp4

On Android 5 (no animation):

android5.mp4

[Leonidius20]

Here's where the indicator is defined in the layout:
https://github.com/Leonidius20/Lugat/blob/29952c18a4f211f563f8487950a47cec399402ed/app/src/main/res/layout/fragment_word_details.xml#L57

And here are the only manipulations that happen with the indicator in the code, which is that the visibility changes between Visible and Gone
https://github.com/Leonidius20/Lugat/blob/29952c18a4f211f563f8487950a47cec399402ed/app/src/main/java/io/github/leonidius20/lugat/features/details/ui/WordDetailsFragment.kt#L90