Standard accent should be placed outside stave
Refer to Behind Bars, page 120.
The standard accent is usually best placed outside the stave, but can be on the stave when it is far from the note... "a series of accents is best placed outside the stave".
In 2.0.3 (since #109096: Articulations incorrectly placed for beamed notes where stem direction differs from default beam direction in 3.0):
The second measure was done by having the anchor "above staff" and with a vertical offset of 1.
What we currently do in this case is explicitly not recommended.
Lilypond (2.18.2) examples for reference:
If this was fixed, #63846: Place sforzato accent one staff space higher if note on middle line of staff has tie or slur and maybe #113086: Accent touches staff line. Issue would also.