I picked up the bike from the dealer. The mechanic checked the compression. The mechanic contacted KTM. Normal compression is 100-110 psi for a KTM 390 Adventure. My PSI was within range. As for the oil...the mechanic said it could have been under serviced. I can honestly say...I did not check...
You are not alone or crazy! I too am having the EXACT same issue. I purchase in the USA a KTM 390 Adventure. About a month of riding. Logged 1000km. I performed the first service. No oil drained out...only a few ml. I scratched me head. What the heck. I never checked the oil level in the first...