Troubles with basic umlauts (0300+)

[Mercury13]

Title

Some bugs with basic combining umlauts (0300+)

Font

NotoSerif-Regular.ttf

Where the font came from, and when

Site: notofonts.github.io
Date: 2023-04-18

Font Version

2.011

OS name and version

W10 22H2, probably all OS

Application name and version

Qt 6.1.3, LOo 7.3.2.2, probably all apps

Issue

0315 — sticks in strange manner both to 25CC and ASCII letters
0334…0338 — unanchored to 25CC
0347 — same glyph as 0333 (should be shorter)
0363…036F — is it possible to make these characters a little bit bolder?

Character data

U+0315 combining comma above right
U+0334 combining tilde overlay
…
U+0338 combining long solidus overlay
U+0347 combining equals sign below
U+0363 combining Latin small letter A
…
U+036F combining Latin small letter X

Screenshot