Problem Definition

When viewing the projects issues via Projects > Issues menu, the JQL Query is shown as follows:

project = "<project>" ORDER BY created DESC

However the network requests shows that the exact JQL being evaluated is actually below:

project = "<project>" AND (hierarchyLevel = <value> OR parent is EMPTY) ORDER BY created DESC

The additional hierarchy clause on the JQL query is due to the Show hierarchy  button enabled.

Because the exact JQL query with the clause isn't shown as is in the advanced search, it's not transparent to the end users and causing confusions as to why some issues are missing.

Suggested Solution

Need to update the JQL in advanced mode to be transparent about the query that gets triggered when “Hierarchy” is enabled. 

• E.g. we could add this JQL “OR (parent is EMPTY OR hierarchyLevel = 1)”?

Workaround

Disable the “Show hierarchy” toggle in the Issues menu as shown below: