What are the potential issues with exiting Thailand and entering Singapore without obtaining entry stamps?

The discussion revolves around concerns regarding a border run from Thailand to Singapore. The original poster questions whether not receiving an entry stamp in Singapore could pose problems when returning to Thailand with only an exit stamp from Thailand. Participants clarify that many travelers, especially with automated systems, do not receive stamps when entering Singapore, and there may not be significant issues as long as the exit from Thailand is documented. Concerns about checking in for flights and the necessity of obtaining boarding passes at the counter are also raised.