I installed the latest version of Obsidian v0.16.0. Many notes I created with a template show now 2 headings. The one with heading level one and the new inline title displaying the filename. The result is that every note has a duplicated heading and use more space. How are you handling this? Are you editing every note and delete the level one heading you created? I also edit my notes in VS-Code. There is not an option for showing inline title. I use the default theme and Minimal theme.
Go to Settings > Editor > Display > Show Inline Title
Two options. If it’s on, it shows the file title at the top of the note kind of big, so it looks like a title.
If it’s off, then it does not show the file title at the top in large text.
In my vault, I have H1s at the top of each note. When the setting is on, then I see both the file name and the h1 at the top of the note in large text as if I have two titles. With the setting off, I only see each note’s h1.