I hadn’t realised that’s a thing (although I probably shouldn’t be surprised) -- I thought all these dual-citizenship tax agreements worked such that you aren’t double-taxed, but the total amount paid needs to meet the minimum for each country.

For example, I thought if you’re resident in the US you might pay your main taxes there, but you’d need to “top up” in the EU.

What’s your specific workaround?

It helps to travel with different legal names and different passports.