Editor crashes when transcoding is skipped twice for a video when it is being re-imported. Refer the attached video

Steps to reproduce:
1) Create new project
2) Import any video file
3) Check transcode and hit apply
4) In the import pop-up menu, click skip all transcoding.
5) Go to build settings > Switch to some other installed platform
6) In the import pop-up menu, click skip all transcoding twice.

Reproducible in: 2019.1.0a10, 2018.3.0b12, 2018.2.0f1, 2018.1.0f1, 2017.3.1p4, 2017.2.0f1

Working fine in: 2017.1.4p2

Notes:
1) Skip all transcoding option is not present for 2017.1.4p2.
2) This similar bug has been fixed https://fogbugz.unity3d.com/f/cases/985030/. Skip all transcoding option is disabled in this case when architecture is switched. But it still appears on platform switching for the fixed version.
3) Editor crashes without opening the bug reporter window.

Environment: Windows and Mac