Hello, Jack,

I have discussed this issue further with the team and moved it to the Feedback Portal as a Bug Report. The main issue that we find with it has to do with the loss of detailed information about the cell once we have focused the header.

It might be because the readers keep some sort of virtual DOM and the missing link from the previous step actually matters, although the current state is valid.

The issue may also be followed in our GitHub repository:

https://github.com/telerik/kendo-ui-core/issues/6147

As a token of appreciation I have added some Telerik points to your account

Regards,
Alex Hajigeorgieva
Progress Telerik

Hi, Jack,

I have consulted with colleagues and regarding the implications of the current state here are our observations:

• It is not possible to have a selected cell and read another, therefore when the cell is selected, the header is no longer the active cell. The association with the header is present when required.
• Despite the previous point the last manipulated cell provides less information than other cells, although its attributes look identical to neighbouring cells in some screen readers
• In Edge used with Narrator each cell was read fully
• In Chrome and NVDA the additional information relayed regarding the sorting, grouping for that cell was not read but was read for others

I am glad that you have found a way to handle this for now. I will continue the discussion with our software engineer who specializes in accessibility and will inform you as I know more.

Kind Regards,
Alex Hajigeorgieva
Progress Telerik

Hi, Jack,

Indeed, this does appear to be the case - once the grid header column becomes the grid active cell, the aria-describedby attribute points to a non-existing id.

If the aria-describedby attribute of the grid cell becomes grid_active_cell when the column header is active,  would that solve the problem?

Look forward to hearing back from you.

Regards,
Alex Hajigeorgieva
Progress Telerik

Hi Jack,

Find below a short video demonstrating the behavior of the id of the header when sorted and not active:

https://screencast-o-matic.com/watch/cYXhoxMj3C

Is it possible for you to try out the example in another browser to ensure that the current browser has not cached any old resources?

As per the active_cell value of the id when the cell is focused, this is definitely the desired functionality and should be regarded as part of the compliance implementation.

Kind regards,
Tsvetomir
Progress Telerik

Hi Jack,

Thank you for taking the time to share the issue that you have encountered. I am happy to inform you that this behavior has already been fixed and is available with the latest version of the suite. Can you try upgrading and see if that makes a difference? 

More information can be found in the following issue on GitHub:

https://github.com/telerik/kendo-ui-core/issues/5923

Regards,
Tsvetomir
Progress Telerik