Signals Notebook: Known Issue in v26.5.0 - Recovering Embedded Images in Text Elements

This article explains how to recover images embedded in Text elements that were affected by a known issue introduced in Signals Notebook v26.5.0.

Problem

When an embedded image in a Text element is affected by this issue, a broken-image icon and file name are displayed in place of the image, as shown in the screenshot below.

There are two scenarios in which an embedded image may be affected.

Scenario 1: Pre-existing Text element (most common): The Text element containing an embedded image was created prior to Signals Notebook v26.5.0, and the Experiment containing that Text element was subsequently browsed after upgrading to v26.5.0 before hotfix v26.5.1 was released. This is the scenario that most affected users encountered.

Scenario 2: Image added during the affected version window (rare): After Signals Notebook v26.5.0 was released and before hotfix v26.5.1 was released, an embedded image was added to a Text element. Because the image was broken at the time of creation, no valid revision history exists for it.

How to recover the image

Recovering broken images - Scenario 1

1. Identify the affected Text element in the Experiment.
2. Open the Text element by selecting the Text element, then clicking the '>' icon next to the section name to open it in "View full size".
   
3. Open the revision history by clicking "History" above the Text element.
4. Locate the most recent valid revision by reviewing the history records from top to bottom and identifying the most recent record that displays the correct image.
   

5. Revert to the valid revision by clicking the "Revert to this revision" icon.
   

   Note: If no record with a correct image can be found, the image was likely affected as described in Scenario 2.
    

Recovering Broken Images — Scenario 2

In this scenario, no revision history entry will contain a correct image, because the image was broken at the time it was originally inserted. This is a rare case that applies only to images added to a Text element during the period between the release of Signals Notebook v26.5.0 and hotfix v26.5.1.

Resolution: Re-insert the image into the Text element to replace the broken image.