@LauCaen Welcome to the forum!
With the information you have provided the answer is NO.
- How long does it take to disappear?
- Is the Pi connected to a monitor that you are seeing the dashboard on? or are you using another device to display the dashboard?
- Does anything else happen when the dashboard disappears?
- Are you running in a Docker image?
- What version of Node-RED and node.js are you running (you can find this in the startup log)
- since you can recreate it, can you provide the plow and the steps that cause it to disappear?
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)
```
code goes here
```
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See this post for more details - How to share code or flow json
