System Information
Operating system: Linux Mint 19.1
Graphics card: GTX 1070Ti

Blender Version
Broken: 2.80, e80cbdac331a, blender2.7, date: 2019-06-04 22:32

Short description of error
Alignment of row with "prop_search" is not aligned properly when using "use_property_split" on layout.
Example blend file has embedded script which creates panel in object properties, with three rows:

1. Normal row with only one prop call.
2. Row with prop_search and icon only operator behind it - wrongly aligned.
3. Row with prop and icon only operator behind it, aligned properly.

Exact steps for others to reproduce the error

1. Open embedded file.
2. Run script.
3. Go to object properties tab and see the Hello World panel.

And images for better explanation:

1. Current situation:

2. Expected: