This should only be relevant for reports based on SSRS originating reports.
Symptom:
Fields containing text with line breaks may look weird after an upgrade of Dynamics 365. The line breaks are missing in the XML output from Dynamics. Printing the standard SSRS report shows the expected and correct output. Address fields, note fields, description fields, etc. are typical fields related to this issue. it is only an issue on original SSRS report fields. Not on fields added via LAC.
Work around:
Since this issue doesn't exist on fields added via LAC, simply copy the existing SSRS report field in LAC and make sure the XML Output name of the new field is identical to the original field. Then you shouldn't need changing any rearranges in the Lasernet form.
Solution:
Update Lasernet connector to version 6.13 or higher.