Created attachment 1193194 [details] fedora-25-20160822-burmese-displays-as-replacement-characters.png I used Fedora-Workstation-netinst-x86_64-25-20160822.n.0.iso for testing. See screenshot.
On Fedora, we have these fonts available supporting Burmese: mfabian@ari:~ $ fc-list :lang=my family file | grep -v mfabian fc-list :lang=my family file | grep -v mfabian /usr/share/fonts/sil-padauk/Padauk-bold.ttf: Padauk,áááá±á¬ááº,á??á??á??á?±á?¬á??á?º /usr/share/fonts/sil-padauk/Padauk.ttf: Padauk,áááá±á¬ááº,á??á??á??á?±á?¬á??á?º mfabian@ari:~ $ rpm -qf /usr/share/fonts/sil-padauk/Padauk-bold.ttf rpm -qf /usr/share/fonts/sil-padauk/Padauk-bold.ttf sil-padauk-fonts-2.8-10.fc24.noarch mfabian@ari:~ $
The problem still exists in Fedora-Workstation-netinst-x86_64-25-Alpha-1.2.iso
The problem still exists in Fedora-Workstation-netinst-x86_64-25-20161003.n.0.iso
*** This bug has been marked as a duplicate of bug 1370118 ***