May be of interest - there's someone claiming on Reddit that they were asked for proof of funds today in Phnom Penh when applying for a tourist visa, specifically a bank statement, despite the person apparently having 60,000 baht cash in hand.
May be lacking in other relevant details, but if true it could be a disturbing change, at least from that particular embassy.
TLDR : Answer Summary
There have been claims on Reddit regarding the Royal Thai Embassy in Phnom Penh asking for proof of funds, specifically a bank statement, during a tourist visa application despite having cash available. Some users highlighted experiences from previous years where proof of funds was required for visa applications in the region. This discussion also touches on the evolution of visa enforcement practices and differing requirements between embassies, especially that of Phnom Penh.