ChatGPT Business Skills appear installed/enabled in UI but are not available at runtime

I’m having similar problems in our Business account with Skills. Here’s a summary of where we’re at and we’re pretty keen for this to get fixed:

Several user-created Skills appear correctly in the Skills UI and can be opened in Edit, but they are not available to ChatGPT in a new chat. When we ask ChatGPT to use or access one of these installed Skills, it reports that it cannot see the Skill in the runtime-accessible skill library.

We have completed the following troubleshooting steps:

• Confirmed the affected Skills appear under the Installed tab.

• Confirmed they open successfully in Edit.

• Confirmed they contain a SKILL.md file.

• Confirmed the YAML frontmatter includes name and description.

• Corrected one Skill’s YAML name from uppercase to lowercase.

• Uninstalled and reinstalled the handoff Skill.

• Refreshed ChatGPT.

• Tested again in a new chat.

• Created a brand-new minimal test Skill called kirsty-runtime-test.

• Tested the new Skill in a fresh chat.

The issue still persists. Even the newly created minimal test Skill appears in the Skills UI but is not available in chat. The assistant continues to report that it cannot access or read the Skill.

The default skill-creator Skill does appear to work, but user-created installed Skills are not being mounted into the active chat runtime. This suggests a mismatch between the Skills UI/editor and the runtime-accessible Skill library.

This issue is also affecting other users, so it may be account-level, workspace-level, or a broader product issue.