**System Information**
Operating system: Linux-4.15.0-144-generic-x86_64-with-glibc2.27 64 Bits
Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.80
**Blender Version**
Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: `rB84da05a8b806`
Worked: -
**Short description of error**
I have a pie menu, with a section like this:
```
box = pie.split()
column = box.column(align=False)
row = column.row(align=True)
row.operator("transform.translate", text="(B) Get Backup")
row.operator("transform.translate", text="(V) Match")
row = column.row(align=True)
row.operator("transform.translate", text="(D) Project")
row.operator("transform.translate", text="Unwrap")
```
Changing the column's align argument to True, leads to the Unwrap button disappearing.
It can be brought back by changing the text length of any of the buttons. For instance, you can shorten or lengthen the Unwrap button's text. Same for the other buttons, changing the text length will usually bring the Unwrap button back.
See [[ https://www.youtube.com/watch?v=v3VkH44p7xk | video demo ]]:
{F10172191}.
I've checked back until 2.77 and it's present in all versions since, likely before that too.
**Exact steps for others to reproduce the error**
* open the blend, run the script in the text editor
* the pie pops up and all 4 buttons are present
* set the column's align arg to True
* the Unwrap button disappears
* change the text length of any of the 4 buttons to make the button re-appear