In general, Adguard does not support browsers with traffic compression option. The only browser supported is Google Chrome. We can filter its traffic even if traffic compression is on.
Adguard can filter the Opera browser if you don't use the Off-Road mode. Otherwise the traffic is compressed so we cannot filter it.
The Opera Mini browser always compresses the traffic so Adguard cannot filter it.
Adguard can filter UC Browser, if Speed Mode or Cloud Acceleration is disabled. Otherwise some of the traffic is compressed and encrypted so we cannot filter it.
The Puffin browser always compresses the traffic so Adguard cannot filter it.