I never, _ever_ had that happen with Brave. In the context of Google deprecating MV2 - Brave's shields are hard coded into the Chromium chromebase and do not rely on MV2 or MV3 [1]. They will also be continuing support for MV2 extensions.
1. https://brave.com/blog/brave-shields-manifest-v3/ 2. https://news.ycombinator.com/item?id=41158769
Note: There isn't really any discussion on that HN post, but perhaps this may spark some.