There is a little special case of markdown numbered (ordered) lists that Obsidian does not handle correctly
# Case 1 (it's a list)
Text
1. item one
2. item two
# Case 2 (it's a list)
Text
1. item one
2. item two
# Case 3 (it's a list)
Text
3. item one
4. item two
# Case 4 (it's not a list)
Text
3. item one
4. item two
According to CommonMark, Case 1, 2, 3 are ordered lists. Case 4 is NOT. Editor/Live Preview does not handle this. Reading mode does.