Sudden JShelter fingerprint warnings about Startpage

I have suddenly been getting JShelter (browser extension) fingerprint detection warnings about Startpage. It appears that Startpage is accessing WebGL data (JShelter Fingerprint Detector Report), Canvas data (JShelter Fingerprint Detector Report), and Speech Synthesis (from a Firefox banner saying Speech Synth. is not supported).

The script that is collecting this data is on the subdomain vf.startpage.com. Disabling the script (along with the entire subdomain) via uBlock Origin does not appear to affect Startpage's ability to provide search results. The subdomain …

browser browser extension canvas collecting data detection detector extension fingerprint firefox privacy report script speech startpage webgl