[BUG] Confusing limits

I'm on the 20x Max Plan.

When the limits reset after 5 hours, with the first message, it states that Opus 4 limits are used up, and we would be continuing with Sonnet 4.

At the same time I can use OPUS 4 with the Claude app.

Either there is a bug, or the documentation is lying and there are no shared limits, and the limits are not entirely resetted every 5 hours? Which one is it?

Stuff like this causes me to switch providers once OpenAI has competing stuff. While Claude is good, it feels like the rules are rewritten without clear communication under the hood.

I generally love Claude Code, but I need a reliable tool, that I can count on.