I try to use toaster with your example : https://preview.keenthemes.com/keen/demo1/features/miscellaneous/toastr.html
When opening the popup, in your example, we have a quick effect of fadein/fadeout and after, a new fadein.
Do you have any idea how to remove this "yo-yo" effect at the beginning ? we don't have this effect on the sdk https://codeseven.github.io/toastr/demo.html
Do you need this fix urgently or do you want to update to Keen v3 with the latest Bootstrap 5.2 and Dark mode support that we are planning to release in a few weeks? Please let me know the urgency and we will provide you the hotfix for the version of Keen that you are using.
Please open src/sass/vendors/plugins/_toastr.scss and remove transition: $transition code from all accurances and recompile the assets folder with gulp or webpack.