`post-merge` hook execute in the background

**Describe the bug**
I'm using two hooks in my project: `pre-commit` & `post-merge`

When I commit, lazygit "close" itself, to show the hook log
It doesn't with post-merge.

**To Reproduce**
Steps to reproduce the behavior:
1. Add post merge hook
2. Pull using `p`
4. Wait for the hook to execute with no feedback

**Expected behavior**
On post-merge, lazygit should hide to show the hook log then be able to go back to the interface, as the pre commit hook

**Desktop (please complete the following information):**
```
commit=9190e9beac90d80e854a726134b12e15d239df45
build date=2021-04-20T11:09:15Z
build source=binaryRelease
version=0.28.1
os=linux
arch=amd64
```