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.