JavaScript error on page log of TextBox

[timja]

Jenkins and plugins versions report

https://weekly.ci.jenkins.io/design-library/TextBox/

2.342

What Operating System are you using (both controller, and any agents involved in the problem)?

Chrome 100.0

Reproduction steps

Open https://weekly.ci.jenkins.io/design-library/TextBox/ and check the browser console

Expected Results

No error

Actual Results

hudson-behavior.js:49 TypeError: e.getAttribute is not a function
    at findFormParent (hudson-behavior.js:2067:22)
    at findNearBy (hudson-behavior.js:275:17)
    at hudson-behavior.js:1532:21
    at hudson-behavior.js:47:13
    at prototype.js:853:18
    at Array.forEach (<anonymous>)
    at Array.each (prototype.js:852:12)
    at refillOnChange (hudson-behavior.js:1531:22)
    at combobox.js:15:9
    at Array.forEach (<anonymous>)

Anything else?

No response