Timezone "Europe/Simferopol" (and Simferopol city itself) should belong to Ukraine (UA), not Russia (RU). Crimea, as temporary occupied area in all international documents states as ukrainian territory.
More details can be found here:
Please make changes to supplemental\windowsZones.xml, returning Europe/Simferopol to correct country.
Otherwise ukrainian government (if officially notified) will insist on making changes in documents in juridical manner (there were some precedents with Coca-Cola company, french maps agency and several more).
By the way, in subdivisions\en.xml regions "UA-40" and "UA-43" given correctly.