I found a comment in the 5.1.4 Known Issues regarding the click of a chart data point to (probably) set some hidden value, allowing some other region to be refreshed.
with link to Redirect to URL of
The comment reads:
We have recently upgraded to 5.1.3, and I thought the link wasn't working (hence my visit to the known issues), but based in this information I tried to double click instead, only then did it honour the link.
5.1.3 - you must double click to action the link
5.1.4 - single click will suffice.
I wonder if this is why this question was posed
JET chart series 2 link not working
Though I wonder why this one was marked as solution, because 5.1.3 now seems to tolerate either #COL# or &COL. syntax.
How to use LINK column in JET chart drill-down
Or is there an even better workaround, other than patching to 5.1.4?