Actually I just discovered this:
https://moodle.org/mod/forum/discuss.php?d=316873 (is it the same issue you are facing now with Dataform 2.9?)
As per Itamar's instruction back then, I had earlier created this tracker:
The fix by Itamar is inside the tracker link of CONTRIB-5827
- you can see by looking at the diff links.
The fix that Itamar did was to this particular file named select.php that is found in the subfolder /mod/dataform/field/select/classes
I.e., specifically (on my server
it looks like this):
What you can do is to ask your Moodle Admin to try this out:
Step 1. BE VERY CAREFUL to backup the original select.php file!!!
Backup or rename the original /mod/dataform/field/select/classes/select.php
to something like this
Step 2. ONLY DO Step 2 if you have already backed up the original select.php file!!!
Copy the attached select.php file into the subfolder /mod/dataform/field/select/classes/
So you now should have two select.php files (one original and one new) as shown in the image below.
Yellow highlighted select.php is the attached file.
Step 3. Test your Dataform. If it works, then the experiment worked. YEA!!!! If it doesn't work, then the
experiment has failed. Aaargh!! If it fails, then immediately delete the new select.php and rename
the backup file select-original.php to select.php.
Let me know if it works or not.