Different sales taxes set-up, but not selectable

Dolibarr current version (Programs) 21.0.1

In Japan there are two sales taxes (8% and 10%). I added them in the dictionary. But it is not selectable everywhere. For example, going to Products > List > Product name > Selling price there is a point Default tax rate when editing the new price, but nothing is selectable there.

However, in contrast, it is selectable when setting up Vendor prices.

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Additionally, it would be nice if we could see the prices tax inclusive, not just tax exclusive. (for example in vendor prices)