Hi Craig,
clicking the button in my Firefox instance seems to do nothing. Devtools show that a request is sent and the correct csv data is received. But no Firefox dialogue that prompts to save that file somewhere shows up.
I’ve restarted Firefox in Troubleshooting Mode, which temporarily disables extensions, themes and reverts settings to default. In that case, the download popup shows up.
Back in my normal Firefox installation, I’ve manually disabled all extensions to rule them out and toggled some settings around but still no luck. I’m at a loss. But since I’m the first person to report this, it probably has to do something with my specific settings…
Best regards