It wasn't the nationalist version, any state flag is inherently a nationalist symbol, the problem is that the logo is from the NDH, a Nazi puppet state of Croatia, which created the Jasenovac concentration camp.
It might be a mistake, but as a young adult, everyone around me (I live in Croatia) knows what the 'first white square' symbolizes.
It wasn't the nationalist version, any state flag is inherently a nationalist symbol, the problem is that the logo is from the NDH, a Nazi puppet state of Croatia, which created the Jasenovac concentration camp.
It might be a mistake, but as a young adult, everyone around me (I live in Croatia) knows what the 'first white square' symbolizes.