Preview Shows Stale Content When Template/Data Processing Fails

[harsh-na]

Preview Displays Stale Agreement HTML After Processing Errors.

Discussion 🗣

When an error occurs during template, model, or data processing, the Preview panel continues to render the last successfully generated agreement HTML. This behavior can be misleading because it does not reflect the current invalid state of the editors.

Context

During the rebuild process, errors are captured and displayed in the Problem Panel. However, the agreementHtml state is not cleared or updated when a failure occurs. As a result, the Preview still renders previously generated HTML even though the latest changes failed to compile.

Detailed Description

The Preview panel is currently driven solely by the agreementHtml state. When a processing error happens, the error state is updated, but agreementHtml retains its previous valid value. This causes the UI to display outdated content, creating inconsistency between the editor state and the Preview output.

Ideally, the Preview rendering should be controlled by an explicit error state. If a rebuild fails, the Preview should display an appropriate error message (or clear the rendered content) instead of showing stale agreement HTML. This would ensure that the Preview accurately reflects the current validity of the template/model/data configuration.

[harsh-na]

P.S - I am working on this issue, Thanks

[harsh-na]

Additionally, while investigating this issue, I observed another related usability gap in the editor.

Context :

The Playground consists of multiple panels where users edit:
1.Concerto Model
2.TemplateMark
3.JSON Data

Currently:

->Errors in Concerto Model and JSON Data panels are surfaced properly.
->However, errors originating from the TemplateMark panel are not clearly surfaced to the user in a consistent way.

This makes debugging harder, especially when multiple panels produce errors simultaneously.