Fix flaky spec due to Capybara misclick

The click can fail if the lazy loaded image shifts the position
of the button. We fix it by waiting for the image to be loaded.

doc/development/testing_guide/flaky_tests.md

@@ -80,6 +80,9 @@ This was originally implemented in: <https://gitlab.com/gitlab-org/gitlab-foss/m
 - [Bis](https://gitlab.com/gitlab-org/gitlab-foss/issues/34609#note_34048715): <https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/12604>
 - [Bis](https://gitlab.com/gitlab-org/gitlab-foss/issues/34698#note_34276286): <https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/12664>
 - [Assert against the underlying database state instead of against a page's content](https://gitlab.com/gitlab-org/gitlab-foss/issues/31437): <https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/10934>
+- In JS tests, shifting elements can cause Capybara to misclick when the element moves at the exact time Capybara sends the click
+  - [Dropdowns rendering upward or downward due to window size and scroll position](https://gitlab.com/gitlab-org/gitlab/merge_requests/17660)
+  - [Lazy loaded images can cause Capybara to misclick](https://gitlab.com/gitlab-org/gitlab/merge_requests/18713)
 
 #### Capybara viewport size related issues
 

spec/features/groups/issues_spec.rb

@@ -93,6 +93,7 @@ describe 'Group issues page' do
       end
 
       it 'shows projects only with issues feature enabled', :js do
+        find('.empty-state .js-lazy-loaded')
         find('.new-project-item-link').click
 
         page.within('.select2-results') do