ShowDiffOnly collapsed line indicators in wrong places

[whiterook6]

Hello. We use react-diff-viewer at my office and I love it. We use it for diffing JSON objects. I just upgraded from version 1.1 to version 3.1.1 to take advantage of the showDiffOnly option. But there appears to be an error with where the viewer is inserting "Expanding {number} lines..." controls:

As you can see, the blue bars with "Expand {number} lines..." options are not in the right place. I expect the changes code to be right in the middle between each blue bar, and for there to be a blue bar on both sides of each block of changed lines, with a 3-line buffer. Additonally, though the line numbers are correct, it isn't adding the correct unfolded lines at the start: in the screenshot, line 356 should have lines 353, 354, and 355 before it, but instead there are 6 lines after it.

These are the props I'm using:

<ReactDiffViewer
  newValue={current}
  oldValue={previous}
  splitView={true}
  compareMethod={DiffMethod.LINES}
  showDiffOnly={true}
  styles={{
    variables: {
      light: {
        diffViewerBackground: "#efebeb",
        gutterBackground: "#efebeb", // color to match well
      }
    },
    line: {
      color: "#4d4d4d", // keep lines looking like code sample
      marginTop: 0,
      lineHeight: "25px",
    },
    marker: {
      // keep + / - markers from getting too wide, also center
      width: "25px",
      minWidth: "25px",
      textAlign: "center",
    },
    diffContainer: {
      // various spacings to look like our code sample
      borderSpacing: 0,
      td: {
        padding: 0,
      },
      tbody: {
        tr: {
          "&:first-child": {
            td: {
              paddingTop: 0,
            },
          },
          "&:last-child": {
            td: {
              paddingBottom: 0,
            },
          },
        },
      },
    },
  }}
/>

I can't include the actual newValue and oldValue objects in here because there's some sensitive work data in these JSON objects. They are just regular javascript objects that have been JSON.stringify()ed.

[whiterook6]

bump

[whiterook6]

bump

[patrickschmelter]

having the same issue

[samtes]

Any update on this?