Input inside compact Input.Group gets 2px right border instead of 1px

[yallie]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

3.8.2

Environment

• Google Chrome 68.0.3440.106
• Microsoft Edge 41.16299.611.0

Reproduction link

Steps to reproduce

• Create a compact Input.Group with two Inputs inside it, set input width to 30%.
• Set prefix="a" or suffix="a" in the first input.
• The first input is rendered with incorrect right border.

What is expected?

All borders should be 1 pixel wide.

What is actually happening?

An Input component inside compact Input.Group with non-null prefix or suffix is rendered with 2 pixel right border.