Hello,
PrestaShop 1.7.5 doesn't allow to use a custom theme anymore for back office but it's possible in PrestaShop 1.6.1.23
I read that here : https://github.com/PrestaShop/PrestaShop/issues/10143#issuecomment-416222465
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Hello,
PrestaShop 1.7.5 doesn't allow to use a custom theme anymore for back office but it's possible in PrestaShop 1.6.1.23