We have released InDesign CC2019.0.2 with a lot of stability fixes. We recommend you to upgrade to latest version (if you’re not already on it) as it is more robust.
If you still face this issue even after updating, please submit the crash report to us. (Guidelines to submit crash are available at https://helpx.adobe.com/indesign/kb/submit-crash-reports.html)
Also, please send the following information to firstname.lastname@example.org :
• Reproducible Steps – What were you doing when InDesign crashed?
• Video recording of the crash?
• Is(Are) the issue related to a specific document(s)/asset(s)? If yes, could you provide the document(s)/asset(s) to us? Please package the entire document (To package the document, choose File → Package…)
Adobe InDesign Team
Hi Liza, what is the InDesign version you have?