we recently upgraded highstock version from 9.2 to 10.1 and we are having some issues.
adding annotation and selecting annotation is not behaving correctly.
instructions to re-create
1. after loading, click on '6m' to load 6m charts and navigator will still show full data.
2. click on 'add flags' .. this will add series with type == 'flags' which has one date which is not visible on plot area.
3. click on 'add lines' and try to add line.. you will notice it does not add annotation at the mouse location.
4. click on ' add circle' and try the same.. circle will not added at the mouse location.. now select circle and try to drag a bit.. sometimes drawn circle will just disappear.
5. now comment data point with date -- Date.UTC(2021, 10, 1) from flag series.. and repeat above steps.. but everything will work just as expected without any issue..
this works fine with version 9.2. Am i missing some new configuration setting ?
https://jsfiddle.net/j4c723pa/2/