Straight vertical subpixel rendering e0b4 & e0b6 ./. e0b0 & e0b2
#### 🗹 Requirements


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#### 🎯 Subject of the issue

**Experienced behavior:**
Subpixel rendering e0b4 & e0b6 (round powerline caps) is broken in comparism to e0b0 & e0b2

There's a red vertical bar on right end of e0b6 and a blue vertical bar on left end of e0b4
Happens with at least SauceCode and Monofur

The behavior can *somewhat* be mitigated by fumbling with the font sizes (heavily depends on TE and DPI, using urxvt and pixelsize I can precisely control this, but not fix it) and the LCD filter (lcdnone and lcdlegacy generally look "bad", but I can find a font size where it's just about fixed - but then there's an even amount of pixels and the glyph vertically off by one. lcddefault and lcdlight will always render a discolored bar - at least I could not fumble it away but for unreasonably -on 96 DPI- large fonts)

There's no such issue with the angular powerline caps, maybe fixed by https://github.com/ryanoasis/nerd-fonts/issues/156#issuecomment-1278487200 ?

**Expected behavior:**
Subpixel rendering e0b4 & e0b6 to be more like that of e0b0 & e0b2

**Example symbols:**
- e0b4
- e0b6

#### 🔧 Your Setup

- _Which font are you using (e.g. `Anonymice Powerline Nerd Font Complete.ttf`)?_
   - SauceCodeProNerdFont-Regular.ttf
   - MonofurNerdFont-Regular.ttf
- _Where did you get the file from (download link, self patched, source downloaded from link...)_
   - https://archlinux.org/packages/?q=nerd
- _Which terminal emulator are you using (e.g. `iterm2`, `urxvt`, `gnome`, `konsole`)?_
   - urxvt
   - alacritty
   - xterm
- _Are you using OS X, Linux or Windows? And which specific version or distribution?_
   - archlinux