[Antioch]

I'm curious if anyone knows what is going on with the word spacing in these examples? Specifically looking at the first line of the second paragraph.

The screenshots are as follows:
1. KePub with patched firmware (excluding legibility patch)
2. ePub (same firmware as #1)
3. KePub with same firmware as #1 + legibility patch

(Note: KePub was converted with KoboTouchExtended driver)

Here are my firmware patch settings:

Spoiler:

Patching ./usr/local/Kobo/libnickel.so.1.0.0
  SKIP  `Allow USB storage even when device locked`
  SKIP  `Allow rotation on all devices`
  SKIP  `Allow showing info panel on random screensaver`
  APPLY `Always show confirmation dialog before upgrading`
  SKIP  `Block WiFi firmware upgrade`
  SKIP  `Both page turn buttons go next`
  SKIP  `Both page turn sides go next`
  SKIP  `Bulgarian Phonetic Keyboard (GloHD/ClaraHD/AuraOne/H2O2/Forma/Libra)`
  SKIP  `Change Browse Kobo home screen link target - Activity`
  SKIP  `Change Wikipedia search language`
  SKIP  `Custom Sleep/Power-off timeouts`
  APPLY `Custom font sizes`
  SKIP  `Custom header/footer page number text`
  APPLY `Custom kepub default margins`
  APPLY `Custom left & right margins`
  SKIP  `Custom navigation menu page number text`
  SKIP  `Customize ComfortLight settings`
  SKIP  `Cyrillic Keyboard (GloHD/ClaraHD/AuraOne/H2O2)`
  SKIP  `DeveloperSettings - AutoUsbGadget`
  SKIP  `Dictionary text font-family/font-size/line-height`
  SKIP  `Disable all tutorial dialogs`
  SKIP  `Don't grab exclusive access to event0`
  SKIP  `Don't uppercase header/footer text`
  SKIP  `Don't uppercase header/footer text and change page number text`
  APPLY `Enable advanced settings for all fonts`
  SKIP  `FeatureSettings - BookSpecificStats`
  SKIP  `FeatureSettings - ExportHighlights`
  SKIP  `FeatureSettings - FullScreenBrowser`
  SKIP  `FeatureSettings - MyWords`
  SKIP  `FeatureSettings - ShowFacebookShare`
  SKIP  `Force user font-family in ePubs (Part 1 of 2)`
  SKIP  `Force user line spacing in KePubs`
  SKIP  `Force user line spacing in ePubs (part 1 of 2)`
  SKIP  `Greek Keyboard (GloHD/ClaraHD/AuraOne/H2O2)`
  SKIP  `Hide browser from beta features`
  APPLY `Ignore .otf fonts`
  SKIP  `Increase page navigation history`
  SKIP  `KePub constant font sharpness`
  APPLY `KePub stylesheet additions - optimizeLegibility`
  SKIP  `KePub stylesheet additions - optimizeSpeed`
  SKIP  `KePub stylesheet additions - text justify`
  SKIP  `Larger Sleep/Power-off timeouts`
  SKIP  `My 10 line spacing values`
  SKIP  `My 24 line spacing values`
  SKIP  `Never show Kobo Plus, wishlist, and points SmartLinks`
  SKIP  `Only show Pocket SmartLink`
  APPLY `Only show stats SmartLink`
  SKIP  `PowerSettings - UnlockEnabled`
  SKIP  `Remove beta features not supported text`
  SKIP  `Remove line from bottom tab bar`
  SKIP  `Remove recommendations (row1col2) from home screen`
  SKIP  `Remove title from reading header/footer`
  SKIP  `Rename new home screen footer`
  SKIP  `Replace adobe page numbers toggle with invert screen`
  SKIP  `Set KePub hyphenation`
  SKIP  `Set visible SmartLink`
  SKIP  `Shorten dictionary entry not found message`
  SKIP  `Swap reading header/footer`
  APPLY `Un-Force user font-family in KePubs`
  APPLY `Un-Force user text-align in div,p tags in KePubs`
  SKIP  `Un-force font-family override p tags (std epubs)`
  SKIP  `Un-force link decoration in KePubs`
  APPLY `Unify font sizes`
  SKIP  `ePub constant font sharpness`
  SKIP  `ePub disable built-in body padding-bottom`
  SKIP  `ePub fixed top/bottom margins`

Patching ./usr/local/Kobo/nickel
  SKIP  `Change TOC level indentation`
  SKIP  `Custom collection/author header title font`
  SKIP  `Custom header/footer captions`
  SKIP  `Custom page navigation scrubber`
  SKIP  `Custom synopsis details line spacing`
  SKIP  `Custom synopsis font size`
  SKIP  `Customise Header back button`
  SKIP  `Dictionary pop-up - increase available text area`
  SKIP  `Increase Book Details synopsis area`
  SKIP  `Increase headlines font`
  SKIP  `Increase home screen cover size`
  SKIP  `Increase library cover size`
  SKIP  `Increase size of kepub chapter progress chart`
  SKIP  `New home screen subtitle custom font`
  SKIP  `Reduce new header/footer height`
  SKIP  `Reduce top/bottom page spacer`
  SKIP  `Remove footer (row3) and increase cover size on new home screen`
  SKIP  `Remove footer (row3) on new home screen`
  SKIP  `Remove forgot pin button from lock screen`
  SKIP  `Series list increase cover thumbnails`
  SKIP  `Show all games`

Patching ./usr/local/Kobo/libadobe.so
  SKIP  `Remove PDF map widget shown during panning`

Patching ./usr/local/Kobo/librmsdk.so.1.0.0
  SKIP  `Default ePub monospace font`
  SKIP  `Default ePub sans-serif font (Gill Sans)`
  SKIP  `Default ePub serif font (Amasis)`
  SKIP  `Default ePub symbol font (Symbol)`
  SKIP  `Disable orphans/widows avoidance`
  SKIP  `Force user font-family in ePubs (Part 2 of 2)`
  SKIP  `Force user line spacing in ePubs (Part 2 of 2)`
  SKIP  `Ignore ePub TOC navpoints`
  SKIP  `Ignore ePub book Adobe XPGT stylesheet (page-template.xpgt)`
  SKIP  `Ignore ePub book CSS and Adobe XPGT stylesheets`

And here are the reader configs from "Kobo eReader.conf" for reference:

Spoiler:

[Reading]
DarkMode=falsechapterProgressType=3
numPartialUpdatePageTurns=1
readingAdobeShowPageNumbers=false
readingAlignment=
readingFontFamily=Georgia
readingFontSize=36
readingLeftMargin=3
readingLineHeight=1
readingRightMargin=3
showProgressBar=false

What I see going on here:
A. Extra spacing between words in KePub causing words to be moved the next line compared to ePub. Perhaps due to a minor difference in margins impacting line width?
B. With kerning (legibility patch) enabled there is extra spacing between letters in KePub compared to without kerning enabled. I expected the opposite: a reduction in spacing.
C. Maybe line spacing is larger in KePub than ePub? Not sure, but not too concerned with this.

Help is much appreciated!