998098 - Single stepping through source doesn't update / incorrectly updates the current line indicator

Status: RESOLVED INCOMPLETE

(DevTools :: Debugger, defect)

Description

[Rob Arnold [:robarnold]]

I unfortunately don't have source to share but it's a fairly simple HTML page with one 600k JS file. There are source maps but I have them disabled.

Sometimes when I single step, the green cursor doesn't move, though I can tell that a step was taken because the variables in the right hand panel update their values accordingly. Sometimes the cursor moves to an unexpected location. For example, my program the if-true branch and stepped from the condition line to the tree branch. I stepped through that block and instead of stepping to the statement after the ifs statement, the green cursor updated to the else branch.

Comment 1

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

Can you narrow it down to a simpler test case you can share? Right now, this bug report isn't really actionable, even though we'd love to fix it (of course).

Comment 2

[Eddy Bruel [:ejpbruel]]

This bug is not actionable without steps to reproduce, and there has been no response from the bug reporter for several months. I'm going to mark this bug as incomplete, but feel free to reopen it if you can give us some steps to reproduce.