v1.4.16 Breaks Change Y-Axis Type Button In Line Chart

[hncleary]

The 'Change Y-Axis type' button that appears when plotting multiple line chart items works correctly when running tsiclient version 1.4.14.

After upgrading tisclient to version 1.4.16, the button is no longer functional with the same data and this error appears in the console.

core.js:6498 ERROR TypeError: Cannot convert undefined or null to object
    at Function.values (<anonymous>)
    at e.adjustSwimLanes (tsiclient.js:1:2049510)
    at e.render (tsiclient.js:1:2057359)
    at HTMLButtonElement.<anonymous> (tsiclient.js:1:2056847)
    at HTMLButtonElement.<anonymous> (tsiclient.js:1:1683420)
    at ZoneDelegate.invokeTask (zone.js:406:1)
    at Object.onInvokeTask (core.js:28679:1)
    at ZoneDelegate.invokeTask (zone.js:405:1)
    at Zone.runTask (zone.js:178:1)
    at ZoneTask.invokeTask [as invoke] (zone.js:487:1)