Certainly is a problem for me and I've seen others say the same. Every doctor I've been to has mentioned it as an issue.
"Caffeine — a major component of many varieties of coffee and tea — has been identified as a possible trigger for heartburn in some people. Caffeine may trigger GERD symptoms because it can relax the lower esophageal sphincter (LES)."
"Caffeine — a major component of many varieties of coffee and tea — has been identified as a possible trigger for heartburn in some people. Caffeine may trigger GERD symptoms because it can relax the lower esophageal sphincter (LES)."
https://www.healthline.com/health/gerd/coffee-tea