Problem in inDesign v15. Previous versión works fine

I use huge indesign files (wen name it A) inside a indesign file(we can name it B), is cool feature that optimice our workflow. After update, everythink looks working well but when we exporte print file in PDFx1a Format we experiment problems on RGB->CMYK conversión on images os "A"file, when we export from "B" file. But it work fine if we export on the original "A" source file. Some similar issues are detected, leaving space in white or low, strange white image file as described on attach file.

Not very sure if it is related with:
https://indesign.uservoice.com/forums/601180-adobe-indesign-bugs/suggestions/38777578-indesign-white-object-exports-as-rgb-in-pdf-x-2008

Thanks

Ever since I updated Adobe InDesign to version 15.0.1, my current document suddenly reverts to a state from several minutes prior. All of my recent changes are gone, up to ten minutes, and they are not even available under Edit > Redo.

I've started saving more often now. Recently, this problem happened again. It suddenly went back to an earlier state than I had last saved, so I closed without saving, reopened, and the file was exactly in the state I expected, which was a LATER state than my document had reverted itself to (thank goodness), but not where I was before the problem happened.

I find myself having to figure out, over and over again, what changes I've made to my document for the last ten minutes so that I can do the same thing over again. I have to save between each step!! This is not good!

I suddenly was seeing the "Space Bar Won't enable Hand Tool" problem that's been a plague for years. A few weeks ago, I installed AdGuard for Safari and Mac. I've been happy with it's ad blocking - but this was the culprit for the problem of the Space Bar not invoking the Hand Too, AND for Command+Space not invoking zoom. I've turned off the helpful ad blocker, and I can use my Adobe Apps (Photoshop, Illustrator, InDesign were all affected).
After all these years, PLEASE fix these apps so that our computers can remain usable and safe while still having access to these important tools!

When working with Arabic and wanting to have Roman Digits, one needs to choose the "Arabic" digits option.
More option that should be set for Arabic are:
Character direction should be set to "default"
Paragraph direction should be set to "Right to Left"
Paragraph composer should be set to "Adobe World-Ready Paragraph Composer"
Language should be set to "Arabic"
Ligatures should be "On"

BUT
If I type a date that suppose to be presented like this:
9/1/2020
as soon as selecting "Arabic" for language the order is reversed to this:
2020/1/9

As digits has a built in Left to Right direction, all neutral characters between the numbers should get the same definition. This is how it worked until the 2020 update.
Now it looks that all the "/" characters where not effected by the numbers direction and remained Right to Left direction.

Mac Pro (Late 2013)
Software OS X 10.14.6 (18G2022)
Processor 3.5 GHz 6-Core Intel Xeon E5
Memory 32 GB 1867 MHz DDR3 ECC
Adobe Software version: 2020

I'm using a Mac and running Catalina, have ID 2020. Yesterday, an existing file of 33 pages stopped allowing me to save it. I had no idea it wasn't saving and lost hours worth of work by the time I realized what was happening. I tried starting a new document and pasting the text into it, but same problem. I started a new document again and it allowed me to save immediately, but the second I dropped in text (different text this time), I lost the ability to save the file. I can export to PDF or IDML, but cannot simply save the file.

Assume that I have selected some text which contains instances of bold, italic, or other "styles" (not INDD "styles," but variations of a typeface within a specific font family).

In previous versions of InDesign, I used to be able to change the typeface of the selected text, and maintain all instances of bold, italic, etc. In newer versions of InDesign, this is only possible when I navigate to the new font family by scrolling through the menu; when I search for a font family, I am presented with only the specific members of the family, not the family itself. This means that no matter which family member (roman, italic, etc) I choose, I will be losing for formatting already applied to the text. Please restore the ability to change the font without specifying a "style"/family member when choosing a typeface by typing its name into the font menu box. Thank you.

If this is unclear, please let me know, and I'll answer any questions.