format_onetopic plugin backwards compatibility

 Copy-pasting from an email, regarding the onetopic plugin's version for Moodle 4.5 and compatibility with older (3.x?) versions - 

I'm updating the format_onetopic plugin on all our Moodle instances. When doing that, it notified me of a new setting, backward compatibility with old styles, which it says will be removed soon.

 Currently I have enabled it, but if possible, please check the courses which use format_onetopic to see if they can be migrated to use the format_onetopic new style editor. The setting for format_onetopic is at

/admin/settings.php?section=formatsettingonetopic

 - the 2nd option, 

"Use legacy style controls. This option is only available for compatibility with older versions of the plugin and will be removed in the future in favor of using only the new style editor." 

Most probably, the way to do this would be:

1. check if the course is displayed correctly

2. go to admin/settings.php?section=formatsettingonetopic and uncheck the "Use legacy style controls"

3. check again if the course is displayed correctly

4. make some edit to the course, check again if the course is displayed correctly

5. If displayed OK, then you can revert the edit, and leave the check box unchecked.

6. If not displayed OK, please let me know.

If you find that unchecking this box does not create any problems for some course which uses format_onetopic, please uncheck the box for all the instances.

Site Administration > Plugins > Plugins Overview > Onetopic_format Settings