Hi Ramon,
Thank you for contacting Syncfusion support.
We have analyzed the reported query “SfListView is not appearing when Page is navigated” at our end, but we were unable to reproduce the issue with our sample. Please find the sample link below
Could you please check with the above sample? If the issue still reproduces at your end, please modify the above sample to reproduce the issue and update us with replication procedure or video link. So, that we could able to analyze the issue better and update you with appropriate solution.
Please let us know if you need any further assistance.
Regards,
Dinesh Babu Yadav