Combobox dropdown flicker

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Declined

Last Updated: 07 Sep 2022 15:07 by ADMIN

Maulik

Created on: 02 Aug 2022 05:36

Category: UI for .NET MAUI

Type: Bug Report

Combobox dropdown flicker

When focusing on combobox either by clicking on combobox or through tab focus it open the dropdown but many time it happens that the dropdown keeps blinking which makes it impossible to select any item from the dropdown. And due to very rapid show and hide of the dropdown it does not let choose any other control on the page and makes the entire page unusable.

5 comments

ADMIN

Didi

Posted on: 07 Sep 2022 15:07

Item status was changed to "Declined" due to insufficient information.

ADMIN

Didi

Posted on: 04 Aug 2022 09:50

Hello Mauik,

I cannot reproduce any issues with ComboBox dropdown when using the Tab key. The control receives focus when it is in editable state. I have tested the SDKBrowserMaui app ComboBox -> Features -> Configuration example. In the example there are 4 ComboBox controls - 1st and 4th are non editable, 2nd and 3rd are editable. When using the tab key the 2nd and 3rd receive focus and the drop downs do not flicker.

The issue I mentioned in my previous reply had a similar behavior, the dropdown was flickering when the control receives focus on Windows and the issue was fixed.

I will need a sample repro project and a video of the behavior. In this way I can research the case further.

Regards,
Didi
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Maulik

Posted on: 02 Aug 2022 07:08

Hello Didi,

The issue you mentioned is about the cursor in the input field of the combobox when edit mode is enabled. This is not the same issue that I am experiencing. My issue is with the dropdown popup and it happens with or without edit mode enabled. I will try to create a sample app and will send here.

ADMIN

Didi

Posted on: 02 Aug 2022 07:03

Hi Maulik,

Based on the provided description we have a similar bug logged in our feedback portal: https://feedback.telerik.com/maui/1570173-combobox-winui-entry-steals-focus-and-cannot-close-the-dropdown-in-edit-mode - A fix for it is provided in Telerik .NET MAUI version 2.1.0.

Could you please check whether the issue you have on our side is the same as the one logged. If not, send us a sample project where the behavior occurs, so we can research the case further. Also attach a video of the issue.

Regards,
Didi
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Maulik

Posted on: 02 Aug 2022 06:09

I have experienced this issue on Windows 11/10 when running the .Net MAUI app as a Windows application.