"Add Trigger" wizard: existing TriggerBinding entry is flickering when mouse hovering it

[adietish]

Steps:

1. ASSERT: have a valid pipeline, ex.

apiVersion: tekton.dev/v1beta1
kind: Pipeline
metadata:
  creationTimestamp: "2021-02-24T14:20:24Z"
  generation: 1
  managedFields:
  - apiVersion: tekton.dev/v1beta1
    fieldsType: FieldsV1
    fieldsV1:
      f:spec:
        .: {}
        f:params: {}
        f:tasks: {}
    manager: okhttp
    operation: Update
    time: "2021-02-24T14:20:23Z"
  name: pipeline-with-params
  namespace: default
  resourceVersion: "1067229"
  selfLink: /apis/tekton.dev/v1beta1/namespaces/default/pipelines/pipeline-with-params
  uid: 19ca63f7-5e99-40f3-9c54-1b8c8ffb82f7
spec:
  params:
  - default: "1"
    name: pl-param-x
    type: string
  - default: "1"
    name: pl-param-y
    type: string
  tasks:
  - name: sum-params
    params:
    - name: a
      value: $(params.pl-param-x)
    - name: b
      value: $(params.pl-param-y)
    taskRef:
      kind: Task
      name: sum-params
  - name: multiply-params
    params:
    - name: a
      value: $(params.pl-param-x)
    - name: b
      value: $(params.pl-param-y)
    taskRef:
      kind: Task
      name: multiply-params

2. ASSERT: make sure that you have a valid TriggerBinding
   ex.

apiVersion: triggers.tekton.dev/v1alpha1
kind: TriggerBinding
metadata:
  creationTimestamp: "2021-02-24T12:53:54Z"
  generation: 1
  managedFields:
  - apiVersion: triggers.tekton.dev/v1alpha1
    fieldsType: FieldsV1
    fieldsV1:
      f:spec:
        .: {}
        f:params: {}
    manager: okhttp
    operation: Update
    time: "2021-02-24T12:53:54Z"
  name: sometriggerbinding-noncluster
  namespace: default
  resourceVersion: "1050871"
  selfLink: /apis/triggers.tekton.dev/v1alpha1/namespaces/default/triggerbindings/sometriggerbinding-noncluster
  uid: 9f80b9f5-717c-43bd-9f9c-b648344bb32e
spec:
  params:
  - name: someparam
    value: somevalue
status: {}

3. EXEC: select your pipeline in tree and pick "Add Trigger" in the ctx menu
4. ASSERT: the "Add Trigger" wizard shows up listing your TriggerBinding
5. EXEC: move your mouse over this entry

Result:
The entry disappears (most likely the text becomes white) as soon as your mouse is over it. It reappears (most likely text becomes black) as soon as your mouse moves away from it

https://user-images.githubusercontent.com/25126/109039063-ac3cbe00-76cc-11eb-9e7b-a577614f379e.mov