What cultural faux pas should I try to avoid making in Istria?

"When visiting Istria, it's important to respect the local customs and traditions to avoid any cultural faux pas. Here are some tips: Avoid discussing the Yugoslav wars and the country's political past, as these topics can be sensitive and may cause discomfort or offense. Do not assume that everyone speaks English. While many Croatians do speak English, especially in tourist areas, it's polite to learn a few basic phrases in Croatian. Avoid comparing Croatia to other former Yugoslav countries. Each country has its own unique culture and identity, and such comparisons can be seen as disrespectful. Do not disrespect the Catholic Church. The majority of Croatians are Roman Catholic and the church plays a significant role in Croatian culture and society. Avoid being overly loud or boisterous in public places. Croatians generally value modesty and discretion. Do not leave without saying goodbye. It's considered rude to leave a social gathering without saying goodbye to each person individually. Avoid being late. Punctuality is highly valued in Croatian culture. Do not refuse food or drink when offered. It's considered polite to accept, even if you're not particularly hungry or thirsty. Avoid wearing revealing clothing in religious sites. Modest dress is expected in churches and other religious sites. Do not tip excessively. Tipping is customary in Croatia, but it's usually around 10% of the bill. Over-tipping can be seen as ostentatious. Avoid making the 'OK' hand gesture (forming a circle with your thumb and index finger), as it can be considered vulgar in Croatia," remarked another expat in Istria, Croatia.