Some FeatureLayer and MapImageLayer do not draw on the specific Android devices when the opacity is not set to 1.

対処法

Only the first layer added to map is affected by the bug.​

The issue was reproduced in Oppo F15 Android 10 device using ARM Mali G72 MP3 900 MHz GPU. The following sample codes given in the steps to reproduce were run on Google Chrome browser.

FeatureLayer (4.16): https://codepen.io/lxie/pen/yLYYwBz

MapImageLayer (4.16): https://codepen.io/lxie/pen/OJyWMaM

• By adding a dummy layer before the correct layer with required opacity, the desired results can be obtained. 
• By setting 0 opacity for the dummy layer it can be prevented from being visible during zooming and panning operations.

For testing purposes the same layer was used as a dummy layer. Below are the screenshots of the testing done.

Issue reproduced with opacity set as 0.5:-

Results with opacity set as 1.

Results with workaround and opacity set to 0.5

再現の手順