Please note that the Chrome version where I verified the issue was 66.0.3359.117. 

Unable to reproduce this issue on reported version 66.0.3359.117 using Windows 10 and Ubuntu 14.04. Added comment line at EOF , breakpoint last un commented line, pressed step over button. Attaching screencast for reference.

@Reporter: Please check the issue and let us know if we miss anything. Please provide sample file to test this issue, and video in reproducing this issue. This info would help in further triaging of the issue.

Thanks!

Deleted: 836452.mp4 12.6 MB

	836452.mp4 12.6 MB View Download

Attaching the video file showing the issue. The code of the file reads:

function abc() {
    var a = 1;
}

abc();

// Comment

abc();
// Another comment

Deleted: BugVideo.mp4 734 KB

	BugVideo.mp4 734 KB View Download

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raghavkatyal1602@ - Could you please provide a sample test file or url to test the issue from TE-end. This will help us in triaging the issue further.

Thanks...!!

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Attaching the file from the repro video. Note: I am not able to repro this consistently. 

Deleted: test.js 111 bytes

test.js 111 bytes View Download

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This one is work as intended. There is magic break location at the end of each script.