To query an item from a program which is not the current program being debugged, you need to point that program as the current context in the call stack list as described below. Otherwise, the context is the current program being debugged and the tooltips show the wrong values. This is the default Visual Studio behavior.
To point which program is the current context:
The program being debugged is indicated by a yellow arrow. This program is also the current context.
This adds a green arrow in front of the program in the list to indicate it is the current context.
The debug tooltip should display the correct value.
You can configure the style of the debug tooltips to either show all items in an array or the value of an expression. You can do this from Tools > Options > Text Editor > Micro Focus COBOL > Advanced, and set your preference in the Debug tooltip style for OCCURS items field.
You can change the tooltip style in the editor with the following default key sequence - ALT+T, T.