Firefox cannot show dataUrl image

[Onlylonger]

Steps for Reproduction

1. copy image file
2. paste image file to the rich text chrome work normal and show image below the rich text FireFox work unnormally

example: https://codepen.io/Onlylonger/pen/GdpeNe?editors=0110

Expected behavior:

image show below the rich text

Actual behavior:

firefox cannot load the dataUrl correctly

Platforms:

FireFox

Version:

1.3.6