System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.67

Blender Version
Broken: version: 2.80 (sub 58), branch: master, commit date: 2019-04-23 17:06, hash: rBf32902e6dacf
Worked: b46245470f79

Short description of error
The tabs for add-ons are no longer clickable in this nightly.

Exact steps for others to reproduce the error
The View tab or any other add-ons that exist in tab form cannot be clicked.