Here are the steps to reproduce the BUG - (System: KUBUNTU 18.10 + Krita 4.1.7 )

1. Launch Krita, create New File
2. Select Text Tool, rub on the image, text dialog opens.

Copy paste this text except the star marks -

***
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.


Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
***

3. Click Save. Keep the dialog open, the text on the image behind shall update.
4. Ctrl + A to select all text in editor, select size 36 or 48.
5. Again click Save. Close the dialog this time.

6. Triple click the text element on image or click once and press enter to open editor again.
7. Voila ! Magic. Only first paragraph remains. the second paragraph is gone.


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I am making some banners where i need to use large image sizes because i am creating high resolution images. So the text editor must support
large font sizes without problems.

The Bug is triggered by NEW LINES.
Having multiple NEW LINES causes multiple nested tags in svg which are getting messed up randomly and very badly.

Same thing happens on Windows 7 + Krita 4.1.7

Yelling doesn't help... See https://bugs.kde.org/show_bug.cgi?id=399288