material-components / material-components/material-components-android
[ExposedDropdownMenu] Selecting an empty unfocused dropdown menu moves the view to the bottom when inside a NestedScrollView
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Description
**Description:** Selecting an empty unfocused dropdown menu moves the view to the bottom when inside a NestedScrollView. The exposed dropdown menu is in a ViewHolder inside a RecyclerView, which is inside a NestedScrollView.
**Expected behavior:** The view's position stay as is.
**Source code:**
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**Android API version:** 30
**Material Library version:** 1.4.0
**Device:** Samsung Galaxy S20+, Samsung Galaxy Tab S7
https://user-images.githubusercontent.com/19756326/126602038-d7fdf021-7277-4931-9393-f10b9f21e322.mp4
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the behavior with the provided TextInputLayout and MaterialAutoCompleteTextView layout inside a ViewHolder, RecyclerView, and NestedScrollView on the reported Android setup. Compare the empty, unfocused selection with the expected unchanged view position; done means the view no longer moves to the bottom.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100