GPU drop down not showing up when GPU nodes are tainted.

Description of problem:

GPU drop-down is not showing up. I thought maybe someone was already using the GPU. that was not the case. 

I have one GPU node, and there was no Notebook pods on it. 

I have a feeling I might know why. Hold on. I need to test my theory. 

So, yeah. The difference is that I usually add a Taint to my nodes called "notebooksonly". I did add it to the GPU node, because:

A) that node has no taint by default

B) I had noticed random pods landing on it and hogging it for nothing

However, as soon as I add the taint, a few minutes later, the drop down disappears. 

When I remove the taint, the drop-down re-appears. 

Prerequisites (if any, like setup, operators/versions):

RHODS + GPU

Steps to Reproduce

1. add a taint called "notebooksonly" to the GPU machine pool. 
2. wait 5 minutes
3.  
4.  

Actual results:

drop down no longer shows up in JupyterHub. 

Expected results:

I'd expect it to still show. 

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

Workaround:

None

Additional info: