Review recognized text fails to fix ocr text and alters visible text
There are several issues with the "Review recognized text" feature. It fails to update the ocr text when a correction is made. It replaces the selected visible characters with nonsense ones.
After pressing the "close" button all of the recognized text becomes invisible.
To see this problem open the attached file and open the "correct recognized text" feature. Select "Review recognized text" and double-click on the word "TRAINMASTER" in the upper left of the page. It will not allow you to manually correct this.
I'm using Microsoft Windows 10 Enterprise and Acrobat Pro DC version 15.17.20050.61080

With the release of Acrobat on 2nd Oct, 2018, this issue has been addressed.
If your product is not already updated, you can manually do so from within the product. Click on the menu Help→ Check for updates.
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Michael Byrnes commented
Why has this not been fixed yet?
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Michael Byrnes commented
The build version and Operating system information were provided. I do not have the source file without OCR. Why do you need that? You could remove the OCR.
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Adminrishusha (Admin, Adobe) commented
Hi Michael,
We have raised a bug for you. In order to resolve this at the earliest and understand it better please share the following information.
1) Acrobat DC build version number
2) Operating system information
3) The source file without OCR for the file you shared.Steps to share the file using Adobe send
Share the file using https://cloud.acrobat.com/send
a. Open this link
b. Click on “Select files to Send”
c. Click link "Select file from my computer" and Select the file
d. Click on Create link
e. Share this linkThanks
Rishabh