Preview as Text output disappears after switching workflow tabs

### Prerequisites

- [x] I am running the latest version of ComfyUI
- [ ] I have custom nodes enabled

### What happened?

A native "Preview as Text" node have a bug where text disappears if you switch workflow tabs inside ComfyUI. This bug has been around since at least around [0.19.1](https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.19.1). I could reproduce this bug even in clean install without any custom nodes.

### Steps to Reproduce

### How is this affecting you?

Feature doesn't work as expected

### ComfyUI Frontend Version

1.45.15

### Browser

Chrome/Chromium

### Console Errors

```javascript

```

### Logs

```shell

```

### Additional Context

Windows 10
ComfyUI 0.24.0
Python Version 3.12.10
Pytorch Version 2.10.0+cu130