Using look around regex in RabbitMQs management UI causes a malformed query url to be sent to the server.

[Lucas Ridge]

Regex Example: ^\w+(?<!_DeadLetter)$

We use a pattern with our queues where any message that fails to process for any of our consumers is forwarded to an associated Deadletter Queue,  Example:

CustomerRegistration

CustomerRegistration_Retry

CustomerRegistration_DeadLetter

The goal of the above regex would be to filter out CustomerRegistration_DeadLetter from the results grid, however when I enter this regex into the filter box, and enable regex, then submit, i get the following error, 

"Pagination parameters are invalid"

Upon closer inspection it appears that the generated api call
GET https://server/api/queues?page=1&page_size=500&name=%5E%5Cw%2B(%3F%26lt%3B!_DeadLetter)%24&use_regex=true&pagination=true,

is somehow invalid from the server's perspective.  In the event that you happen to leave the queues grid in any way after entering this in the box, you will be unable to load the queues list until you remove the rabbitmq.queues_current_filter_name key from local storage in your browser.