"Show More" button missing when loading folder children using tree panel

[LianaHarris360]

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Target branch: unstable

Observed behavior

When navigating to a folder by clicking on it in the folder tree panel (left sidebar), the "Show More" button does not appear at the bottom of the content list, when there are more subfolders to display. This causes only a partial set of children to be displayed, with no way for the user to load the rest.

The issue doesn't seem to occur when navigating to the same folder through the main content panel, unless you've already used the left sidebar.

Errors and logs

With "Show More"	Without "Show More"

Screen.Recording.2026-07-23.at.11.32.41.AM.mov

Expected behavior

The "Show More" button should appear at the bottom of the content list regardless of whether the folder was opened through the tree panel or the main panel.

User-facing consequences

Users navigating using the folder tree panel see an incomplete list of content and do not know that additional folders exist, or no longer see content that was previously visible, leading to the impression that content is missing from a channel.

Steps to reproduce

1. Clear browser cache
2. Open a channel in Kolibri Studio that has a folder with enough subfolders to trigger pagination
3. Navigate to that folder by clicking on it in the folder tree panel in the left sidebar, rather than clicking through the main content panel
4. Scroll to the bottom of the list
5. The "Show More" button is absent and only some of the subfolders are displayed