I was looking at how "eer" is usually pronounced and I used the CMU pronouncing dictionary (American accent). I saw that most of the time (around 95%) "ee" before "r" is pronounced /ɪ/, but there are a few words like seer for which the dictionary says that "ee" is /i/. However, when looking at the oxford dictionaries (Received Pronunciation), all the words that the CMU says that have an /i/ are indicated as being pronounced with a /ɪ/.
Is the CMU dictionary wrong or is seer (or bucaneer or puppeteer) really pronounced with /i/ while other words like steer, deer, veneer and peer are pronounced with an /ɪ/?
Seer, CMU /sir/: http://www.speech.cs.cmu.edu/cgi-bin/cmudict?in=seer
Deer (~95% of the words with this pattern are pronounced like this), CMU /dɪr/: http://www.speech.cs.cmu.edu/cgi-bin/cmudict?in=deer
Seer, oxford dictionaries (pronunciation at the bottom) /sɪə/ (non rhotic that has schwa instead of /r/ because of RP, but vowel is /ɪ/) https://www.lexico.com/definition/seer
Deer, oxford dictionaries (pronunciation at the bottom) /dɪə/ (non rhotic that has schwa instead of /r/ because of RP, but vowel is /ɪ/) https://www.lexico.com/definition/deer
I know RP and Ame are different, but I'm adding it anyway because it supports a bit the argument saying that seer is /sɪr/