Will Islamic country have problem with woman in sandals?

No, not at all

i live in KSA and there is no such problem here, and why should it be?

Peolpe are allowed to wear anyhting whatever they like but you should be in your proper "hijab". Which means that not women but men also have their "dress code". Women and men have been given their own seperate dress code from Islam. Here women are not allowed to show-off their body that means they should wear a proper "abaya". Your palms and face can be left open but hairs should be covered.

Israel will have a problem with that too. Many groups who go to Israel tell the women in the group to wear long sleeve shirts, otherwise you will be looked down upon.

But yes, especially countries like Afghanistan and Iran will have problems with women "showing skin".

Will Christians countries have a problem with women puting some cloth on, and start treating them like human beings and not cows?

Does anyone else understand this?