I'm contacting you about a recurring bug I've encountered—and that several other developers have reported—since the Adobe InDesign 2025 update (versions 20.4, 20.4.1, 20.5).

🔹 Problem Description

• In a plugin using Adobe UXP (UI HTML or Spectrum), the dropdown elements <select>—or <sp-picker>—no longer respond to clicks: the border may change color, but the list doesn't open, and it's impossible to select an item.

• Even when using minimal HTML code or testing from UXP Developer Tools (Playground), the problem persists.

• This bug seems to affect several environments (Windows 11, different versions of InDesign, and possibly macOS as well, according to community feedback).

• In some cases, events (click, change, keydown, etc.) are no longer emitted for form controls.
  Adobe Creative Cloud Developer Forums

🔹 Impact

Existing plugins become unusable — users are unable to enter or select options, thus blocking normal operation.

Production usage is severely disrupted.

Loss of confidence in the stability of the UXP runtime.

🔹 Step to reproduce

1 - Create starter package
2 - Add select with options tags
3 - Use UXP Developer tools or package it
4 - Open panel in Indesign 2025
- under 20.4 version, it works fine. We can open option in select
- upper 20.3 version, select tags, checkbox,... doesn't work

🔹 What I'm asking

Can you confirm that this bug has been identified internally?

Is there a planned fix (future version or update) to restore the behavior of dropdown lists/sp-picker/select in UXP under InDesign 2025?

If not, is it possible to obtain an official workaround (patch, beta build, directive) for our plugins in production?

Thank you in advance for your help—this bug seriously compromises the reliability of UXP plugins. I am available to provide code examples, reproductions, or logs if that would be helpful.

Sincerely,
Stéphane Senocq