[BUG] Search Error: Bad escaped character

[mangoldd]

Describe the bug

See attached screenshot.

To Reproduce
Steps to reproduce the behavior:

1. I go to ALS and select Discover together with logstash-*
2. See the error message (Bad escaped character) even without any specific filter or field selections

Expected behavior
A clear and concise description of what you expected to happen.

OpenSearch Version
Looks like v 2.15.0

Plugins

I don't know

Screenshots

This issue seems to be completely Browser and OS independent.

Additional context

Add any other context about the problem here.

[mangoldd]

Sometimes clicking on 'New' resolves the issue temporarily, sometimes it doesn't

URLpath: discover#?_a=(discover:(columns:!(_source),isDirty:!f,sort:!()),metadata:(indexPattern:'logstash-*',view:discover))&_q=(filters:!(),query:(language:kuery,query:''))&_g=(filters:!(),refreshInterval:(pause:!t,value:0),time:(from:now-15m,to:now))