I just did the 2018 update, so I think it's the most recent version: 13.0 x64

I have a document template that contains many character and paragraph styles with export CSS tags that contain the lowercase ‘i’ in them. This character is being exported as a blank space, which completely breaks the CSS, like this:
should be: <p class="bright"></p>
getting: <p class="br ght"></p>

This problem was easily replicated in a fresh new document, so it’s something with InDesign, rather than my template file.

This workflow involves complex style mapping through to CSS classes. Because so many of the classes contain the character 'i', this problem has brought the workflow to a dead halt.

• InDesign 15.1.2 / Mac OS 10.15.6

• Create an InDesign document with Arabic content. Apply any Arabic font.

• When exporting to EPUB (Fixed Layout) we should see the Arabic text appear in the epub viewer in similar manner as it shows in InDesign document.

• The exported epub document is viewed in Apple's Books application, and Adobes Digital Editions 4.5 with similar problems in both epub viewers, where all Arabic text is either invisible or messed up and shifted from its location.

• Attached images from InDesign document, and epub file which was exported from InDesign.

• Links from InDesign forums on the same topic…
https://community.adobe.com/t5/indesign/arabic-text-no-showing-on-epub-fixed-layout/m-p/11406882?page=1

https://community.adobe.com/t5/indesign/arabic-text-not-showing-upon-export-to-epub-on-version-15-1-1/m-p/11384957?page=1

https://community.adobe.com/t5/indesign/arabic-epub-issue-from-indesign/m-p/10818486?page=1

We are using the "Publish Online" feature inside Adobe Indesign to make some of our content available on our website. We've recently received reports from users with Apple iOS 13 mobile devices that the content is not displaying properly on those types of mobile phones. When the content first opens, if you double tap the page zooms in ok and double tapping again zooms out ok. However, if you try to pinch/zoom, the page blows up very large such that you can only see a couple words and you cannot pinch to get back out. Sometimes double-tapping again takes it back to a normal view, but often it zooms back out with part of the page cut off. This content was created using InDesign Creative Cloud 14. I spoke with tech support and she indicated a ticket was filed with the engineering team. Posting here as well for others to be aware and to receive updates!

Windows 10 15.0.3 broke Book TOC when exporting to EPUB; works in 15.0.2

Not only did 15.0.3 eliminate Book > Export to EPUB option of EPUB Version 2.0.1, it changed the Table of Contents to include duplicate entries linking to every PAGE within a chapter. The Book.epub file had a separate .xhtml file for every page in the book, rather than one .xhtml file per chapter and one TOC entry per chapter. This makes the Table of Contents useless.

Reverting InDesign back to 15.0.2 fixes the problem.

Here are the parameters I used to export the EPUB:
Book Menu :
Export Book to EPUB (Reflowable)
General
Version : EPUB 2.0.1
Cover : Rasterize First Page(change later)
Navigation TOC : Multi Level(TOC Style)
TOC Style : Table of Contents Style
Content : Based on Page Layout
Text
Option : NOT Remove Forced Line Breaks
Footnotes : Placement: End of the section(Endnote)
Lists :
Bullets : Map to Unordered Lists
Numbers : Convert to Text
Object
DO Preserve Appearance from Layout(for Graphic / Media objects)
NOT Use existing Image for Graphic Objects
CSS Size : Relative to Text Flow
Layout : Align Center
Space Before : 0 Pixels
Space After : 0 Pixels
NOT Insert Page Break
NOT Ignore Object Export Settings
Conversion Settings
Format : Automatic
Resolution : 300 PPI
JPEG Format : Baseline
JPEG Quality : Maximum
HTML & CSS
Include classes in HTML
Generate CSS
Preserve Local Overrides
Include Embeddable Fonts

JavaScript

Metadata
Identifier : urn:uuid:5365cc97-ed5a-4e7c-b325-715c0649c355

Viewing Apps
Kindle Previewer 3.39.0

I have .indd and .epub files from both 15.0.3 and 15.0.2, but I'd rather not publish them to the world. I'd rather you contact me and I'll e-mail you a link to them.