A Vivaldi-browsing donor is encountering persistent banners despite the usual steps to suppress. Their specs are:

Vivaldi 2.1.1337.51 (Stable channel) (64-bit)
Revision 73e8a741402d9589f3249582d24e5c2da63f1880-refs/branch-heads/3538@{#1097}
OS Mac OS X
JavaScript V8 7.0.276.42
No I do NOT clear cookies (last time I looked there were 3134 including ~12 wiki.
There are donate.wikimedia.org and payments.wikimedia.org among them.
I accept all cookies except Third-party

If there are any steps I can recommend they take, please let me know.
ZD #522808