"The bread tastes bad."
빵이 is usually used in plain text, and 빵은 means that "at least the bread tastes bad."
So like 빵이 makes it definite that the bread doesn't taste good while 빵은 would tag it as not being all that bad?
빵은 맛없슴니다 - Bread tastes bad. (Generally speaking that all bread are bad)
삥이 맛없금니다 - The bread tastes bad. (Specifically stating that a certain/the bread in front of you is bad)
The TTS is correct. 맛없다 is a compound verb, so 맛 should be pronounced [맏].
Wait, so with compound verbs, you do not move the batchim into the next block?