Moon+ Reader Pro v6.1: a small test failed :(

[simurq]

I'm testing my newly created multilingual EPUB3 on Moon+ Reader Pro v6.1 (MRP61) and have so far identified a few problems with rendering the file.

Disclaimers:

# Since I couldn't find the developer's forum, I ended up here. You're welcome either to enlighten me here, possibly showing me my own mistakes, or to guide me to a proper place where I can get support. So, please bear with me...
# EPUB3 file discussed here has been validated successfully using the latest W3C tool.
# As of writing, the book has also been tested with no serious discrepancies in Kindle Previewer v3.31 (the latest version I could run on Windows 7 64-bit), Sigil v1.3, Calibre v4.23 and Chrome v84.0.4147.135.
# The content shows as styled in the embedded CSS files with the MRP61 option Show "Preview with publisher formatting" button on top bar enabled.
# Test has been performed with CSS styling on/off in MRP61 (Miscellaneous -> Disable CSS styles) to no avail yet.
# I may not share the whole content here but you can download and analyse/test part of it in addition to pieces of code and markup I shared below as much as it can be helpful to visualise the problem (instead of posting screenshots). If not, please ask for more.
# Devices the program was tested on:

• Samsung Galaxy Tab 2 7.0 with Android v4.2.2
• HTC One S9 with Android v6.0
• Samsung A8+ with Android v9.0

Failures:

# Images on dedication.xhtml (200.png), frontpage.xhtml (publogo.png) and annotation.xhtml (star.png) do not go in line with the styling instructions, and cover as much screen space as possible. This is also true for the text on these pages. Other images (e.g., in Chapter 3) are positioned and displayed properly though.
# Spans with Ancient Greek scripts (span class="greek" lang="grc" xml:lang="grc") are missing some characters from the Unicode block Greek Extended.
# Spans with Arabic scripts (span class="arabic" dir="rtl" lang="ar" xml:lang="ar"):

• render the direction of the whole paragraph RTL;
• change text alignment from justify to left;
• change the position of portions of text (elements?) within the sentence.
• do not render the embedded Arabic font (I may be wrong here since I didn't put the fonts in a separate font folder in MRP but I can see a difference in the appaearance of scripts in MRP and in Chrome. Nor did MRP complain about the improperly placed or embedded fonts used in the book).

# Text in pt01.xhtml, pt02.xhtml and pt03.xhtml is centered correctly but not positioned properly. Text appears on top of the page, while it should be centered absolutely on it (see: section.parts {} inside kitab.css).
# The content of headings H1 is justified and hyphenated contrary to CSS instructions (text-align: left; hyphens: none;)
# Border styling does not apply properly on block quotations (see: blockquote {} inside kitab.css):

• property border-left does not align with border-radius properly - no curving around, only a vertical bar;
• data from properties quotes and content is not rendered at all.

# Footnotes on footnotes.xhtml are not rendered as styled (see: selectors a[id^="fnote_xx"]:after inside kitab.css)

Hopefully, I don't encounter any more problems to extend this list...

Thank you!