Marcel Taeumel uploaded a new version of Tools to project The Trunk:
http://source.squeak.org/trunk/Tools-mt.973.mcz

==================== Summary ====================

Name: Tools-mt.973
Author: mt
Time: 9 June 2020, 4:18:39.208147 pm
UUID: 18cfc395-b058-ad40-b1f1-c9e12f27da62
Ancestors: Tools-mt.972

Fixes access to "stack top" in inspector for context variables (i.e. the one in the debugger), which is used in field-list menu actions such as 'inspect' or 'explore'.

=============== Diff against Tools-mt.972 ===============

Item was added:
+ ----- Method: ContextVariablesInspector>>selectionOrObject (in category 'selection - convenience') -----
+ selectionOrObject
+ 	"Special treatment for #stackTop. See #fieldStackTop."
+ 
+ 	^ self selectedField
+ 		ifNil: [super selectionOrObject]
+ 		ifNotNil: [:field |
+ 			field key = #stackTop
+ 				ifTrue: [
+ 					self object actualStackSize > 0
+ 						ifTrue: [self object top]
+ 						ifFalse: [self error: 'There is nothing on stack top.']]
+ 				ifFalse: [super selectionOrObject]]
+ 			!