Thank you for reporting the issue to us.
We have fixed the issue in the latest version of InDesign, Id 14.0.3
Please upgrade your InDesign application to the latest version to try out the fix.
If you are unable to see the update yet, go to Creative Cloud desktop application, open the menu (three dots) from the top-right corner and click on ‘Check For App Updates’.
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You may also follow the below given link for the list of all fixed issues in Id 14.0.3
https://helpx.adobe.com/indesign/kb/fixed-issues.htmlCyrus Wraith Walker commented
WOW a whole year later you fix it. And after giving me so much grief on the phone that it wasn't broken. So for a year I've had to resize the text frames by hand for all the books I have worked on. Thanks for fixing it, but I really am not impressed.Cyrus Wraith Walker supported this idea ·Cyrus Wraith Walker commented
I spent three hours with Adobe on the phone over two days. The first tech denied that the feature of text frame readjusting automatically had ever been part of indesign. After finally getting supervisor on the phone that knew what he was talking about he directed me to: FILE>Adjust Layout>Auto-Adjust Margins to Page Size Changes. Which can also be found by going to FILE>Document Setup>Auto adjust. When this is to a current document with text, all of the text boxes disappear tiny little markers in the middle of the spread. I'm so SICK of Adobe messing with features that are needed and screwing them up. And if you tell they screwed up they will argue with you.