Have been using the javascript API to do a variety of operations including building custom tabs on the viz (and not using ones generated from the workbook)

I render these tabs within onFirstInteractive callback and its working great.

We then started running into some serious performance issues - very slow loading viz- and we started exploring ways to improve performance and make better use of caching (given our specific business use case).

We discovered that by appending #1 to our viz url the caching improvement is tremendous.

for eg...instead of

https://server/view?param1=true

we use

https://server/view?param1=true#1

BUT - doing so breaks all our above custom tab code.

For eg

- OnFirstInteractive no longer fires!!

- Trying to call methods on the viz throw an excetion - for eg calling viz.getWorkbook() throws Cannot read property 'get_workbook' of null

- even specifying options on the viz like hideTabs and hideToolbar have NO impact, ie nothing changes. (height and width do change)

It almost seems like using this cached viz (#1) does not create a full viz object and does not allow any manipulation of the viz!

This is a big problem for us and I cant find any support/help on this.

Has anyone experienced anything like this ? Any suggested fixes or workarounds?

Thank you