TMP Importer window doesn't resize on selecting the maximize button also window is not resizing by dragging mouse button.

Steps to repro:
1. Create a new Project.
2. Edit > Project Settings > TextMesh Pro
3. Click on the maximize button from TMP Importer

Actual Result:
TMP Importer window doesn't resize

Expected Result:
TMP Importer window should be maximized when selecting on the maximize button.

Reproducible in:
2019.1.0a9, 2018.3.0b10, 2018.2.0f2, 2018.2.0a1

Environment:
Occurs only on Windows

Note:
1. Window changes position when clicked on the maximize button.
2. TextMeshPro is introduced in 2018.2.
3. If TMP Importer window is docked and maximized from window dropdown then window gets maximized.