Double-and triple-tap to select text broken in Firefox Android

[mogul]

Describe the bug
A clear and concise description of what the bug is.

• Which site: dev.phanpy.social
• Which site version: 2024.09.04.74c6bf6
• Which instance: hachyderm.io

To Reproduce
Steps to reproduce the behavior:

1. Install Firefox in Android and open it
2. Go to 'https://dev.phanpy.social'
3. Log into your account
4. Tap the "compose" icon
5. Type in a few words
6. Double-tap on a word that you just typed

Expected behavior
The word is selected. (Instead, the cursor moves to the spot, but no text is selected.)

Desktop (please complete the following information):

• OS: Android
• Browser: Firefox
• Version: 129.0.2

Smartphone (please complete the following information):

• Device: Google Pixel 6a
• OS: Android 14
• Browser Firefox
• Version 129.0.2

Additional context
Triple-tapping to select a sentence doesn't work either.

(Long-pressing does work for word selection, after which you can expand the selected string with the handles.)

I confirmed that it works in Android Chrome, with the same keyboard.

I confirmed that it's broken in Android Firefox whether you're using Phanpy installed as a PWA, or in a browser tab.

[cheeaun]

… works in Android Chrome…

… broken in Android Firefox…

From first look, this honestly sounds like a browser bug. Questions:

• Is this a recent bug? Was it working before this specific version of Firefox?
• Was it working before on Phanpy, perhaps before specific dates or Phanpy site versions?