Adobe InDesign CC v 13.0 - macOS 10.9 - 10.13

I feel like this was a previously fixed bug in an older version, but may well be back with the latest 2018 update.

After upgrading InDesign to v 13.0, we are now not longer able to open a copy of files in use, neither duplicate the file in Finder.

When we try to open a copy we get this error message: “Cannot open file [filename.indd]. The file [filename.indd] is incompatible with Adobe InDesign (Error code: 14).”

When we try to duplicate the file, we get this error message: “The operation can't be completed because the item [filename.indd] is in use.”

Version of Adobe InDesign, InCopy or InDesign Server

Adobe InDesign 15.0.1

macOS High Sierra 10.13.6

iMac 27 Zoll End 2012

Steps to reproduce the issues

See also attached video

Open Document "02VKLeerzeilenTEMPEnde.indd"
Open Data-Merge Panel
Generate a merged document with click on the button
Uncheck "Remove Blank Lines for Empty Fields" in Content Placement Options
Press [OK]
Repeat Step 3 this time Check "Remove Blank Lines for Empty Fields" in Content Placement Options
Press [OK]
Put the documents side by side
Activate "Show Style override" in the paragraph panel
Jump to page 2
On the left side (Merged Document, Blank line intact) you can see the 2 markers followed by a paragraph symbol
On the right side (Merged Document, Blank line removed) you can see that the 2 markers with paragraph symbol moved 1 line up behind the 7 and the other paragraph symbol is deleted
Everything is o.k. because the paragraph style (07padresse) of the line "Mobile" and the deleted "Blank line" are the same
Jump to page 3
On the left side you can see the 2 markers followed by a paragraph symbol
On the right side (Merged Document, Blank line removed) you can see that the 2 markers with paragraph symbol moved 1 line up and the other paragraph symbol (blue highlighted on the left side) is deleted BUT this time the paragraph style of these 2 paragraph are NOT the same! The result is a bigger gap between the two sentence "Frau Marie…" and Tel: 012…" on the right then it should be as you can see on the left

Expected result
The Blank line (2 markers and paragraph symbol) should be deleted/removed

Actual result
Instead of the Blank line (2 markers and paragraph symbol) the paragraph symbol before that (blue highlighted on the left side) is removed AND the remaining paragraph also picks up the paragraph style from the "Blank line" (if there were text in my example you could see that as well)

Workaround
You can generate a merged document with Blank lines and delete/remove them with Find/Change
Find > (markers) + paragraph symbol = <FEFF><FEFF>^p
Change > to nothing
This way everything stays intact!

Test file, screenshot, video or GIF capturing the issue (optional)
Video and sample files attached

I've created a test file with links and images and test text to try and replicate the fault. Follow the steps in the InDesign file attached.

Put simply, text – whether it is UTF-8 or UTF-16 can import unicode characters that are meant to represent emojis etc, and this is demonstrated in the test file. While not in the minion character set, I've created a GREP style that looks for unicode characters and changes them to apple color emoji. That bit works.
What does NOT work is when importing the text as part of a data merge... instead the unicode characters are completely skipped.
Links to the testfile are here: https://www.dropbox.com/sh/32graq18jww5itp/AAAu0Y2bJnCiXjseSTBBFLcJa?dl=0

1. CC 2018 – 13.1 (Can't update to CC 2019 right now because of Plugins)


2. 
   
3. Create a big "master" Text frame


4. Create 2 more text frames that auto adjust in height and fill them with lorem ipsum or any text.


5. Paste those two text frames into the first created "master" Text frame


6. Change the Text in the first Text frame (Add some empty lines or remove text) and see InDesign fail to update.


7. Expected result: Should be pretty obvious... InDesign should not fail to update the current view.


8. Actual Result: All Textframes are misaligned because InDesign does not update correctly – If you dare to move the "master" text frame now it gets even stranger. - The only way to update it to the correct look is to force InDesign to update the text frame by changing something like space after in the "master" text frame. (See video and Screenshot attached)


9. See attachment


10. Usecase: for Example DatabasePublishing inline publication - where every here shown "Textframe" would be a product within a Page – But it is impossible to work like this! – I could be wrong but i have a feeling that this is happening since the disapearing Tablehead bug got fixed (unconfirmed...) i don't have the option to test it in an older or newer version - but we never had this issue before.