Empty lines before front-matter cause it to be invisible, but still parsed as front-matter

[alexdodge]

Steps to reproduce

1. Create a new vault
2. Create a markdown file (using an external editor) with the following contents:

---
tags: foo
---

3. Observe the YAML is being presented as a Properties widget, and the file is tagged with “foo”
4. Add a blank line to the beginning of the file.

---
tags: foo
---

5. Observe that there is no Properties widget, but the note is still tagged with “foo”
6. Add a non-blank line to the beginning of the file

x
---
tags: foo
---

7. Now the YAML is being displayed as markdown and the note is not tagged with “foo”

Did you follow the troubleshooting guide? [Y/N]

Yes

Expected result

I expect the blank line to have the same effect as a non-blank line before the YAML block. Only a YAML block that starts at the very first line of the file should be interpreted as front-matter, and if something is interpreted as front-matter it should always be shown in the UI according to whatever visibility settings the user has.

Alternatively, if we want to ignore blank lines at the beginning of a document, it should at least be handled consistently in the UI.

Actual result

Blank lines create a weird phantom front-matter, which can add tags to a note but cannot be edited in the UI using the new Properties display mode.

Environment

SYSTEM INFO:
	Obsidian version: v1.4.5
	Installer version: v1.3.5
	Operating system: #92~20.04.1-Ubuntu SMP Mon Aug 21 14:00:49 UTC 2023 5.15.0-83-generic
	Login status: logged in
	Catalyst license: none
	Insider build toggle: off
	Live preview: on
	Legacy editor: off
	Base theme: dark
	Community theme: none
	Snippets enabled: 0
	Restricted mode: on

RECOMMENDATIONS:
	none

---

Additional information

[WhiteNoise]

Properties / YAML not showing if there is an empty line on top

will be fixed in 1.4.6. It won’t be possible to have empty lines (before YAML) going forward.