1353253 - [e10s] select - options styling doesn't work properly if it's changed by JavaScript

Status: UNCONFIRMED

(Core :: Layout: Form Controls, defect)

Description

[684sigma]

Attachment: options styling doesn't work (JavaScript changes, first case), by reporter.html

I noticed a problem in Nightly 55 (found in Video Download Helper extension). It doesn't happen in ESR 45.
JavaScript don't always styles options in <select> drop-down properly when it changes styles or attributes in parent nodes.
There're two ways to reproduce the bug

First:
1. Open the first attached page
2. Click on <select>

Result: Options aren't styled correctly.
Expected: Should be all colored.

Comment 1

[684sigma]

Attachment: options styling doesn't work (JavaScript changes, second case), by reporter.html

Second:
1. Open the second attached page
2. Click on <select>

Result: Options aren't styled correctly.
Expected: Should be all colored.


Tested on Nightly 2017-04-03, User Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0

Comment 2

[684sigma]

This bug is analogue of Bug 1350670 that fixed some of the cases when JavaScript changes background/color on options.