Global filters not shown on image export on Firefox

[satche]

Description of the bug

On Firefox, if you turn on a visual global filter (i.e. grayscale, sepia, ding or tint), the filter doesn't appear on an exported image (jpeg/png).

Steps to reproduce

1. Open Firefox
2. Open/Create new map
3. Click on a global filter
4. Export an image
5. Open the exported image
   The global filter is not shown on the image

• Version: FMG 1.138.0
• Browser: Firefox 151.0.2
• OS: Archlinux (probably unrelated)

[shotgundirectory]

Can confirm same issue. Persists through cache clearing.

Version: FMG 1.138.2
Browser: Firefox 153.0
OS: Windows 11