YouTube Export with Thumbnail Frame for Subsequence via Media Encoder Invalid

When exporting a subsequence to Adobe Media Encoder via the context menu from the project browser in Premiere and selecting a custom thumbnail frame, the ultimate selection has the incorrect timecode resulting in no thumbnail frame being generated and uploaded as shown in the screenshots below:

You can see in the following screenshot that the same timecode that was in Premiere is shown:

However since this clip "starts" at 01;05;22;29 the correct timecode for the screenshot is 01;09;29;02 is my math is correct.