Unable to upload files on snap version of RC

Installing a snap and then trying to upload a file (I have tried with jpg and pdf) do not work. This regards the default general channel, as well as a new channel I created.
Tested in the snap versions provided for Ubuntu 16.04 server and Raspbian 9.
The related error which appears in the logs of the server service itself is the following:

Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]: Error: FileNotFound: no file with id GSkEKEQSyjREkBJBH found
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at /snap/rocketchat-server/1278/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/gridfs-stream/index.js:190:25
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at /snap/rocketchat-server/1278/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/collection.js:1215:18
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at handleCallback (/snap/rocketchat-server/1278/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/utils.js:120:56)
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at /snap/rocketchat-server/1278/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/collection.js:1252:5
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at /snap/rocketchat-server/1278/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb-core/lib/connection/pool.js:469:18
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at _combinedTickCallback (internal/process/next_tick.js:131:7)
Feb 27 13:58:22 localhost rocketchat-server.rocketchat-server[1985]:     at process._tickDomainCallback (internal/process/next_tick.js:218:9)

Start by reproducing file uploads on the snap version using both the default and a newly created channel, with JPG and PDF files, while checking the server logs for the reported MongoDB GridFS FileNotFound error. Done means uploads complete successfully without that error on the tested Ubuntu 16.04 Server and Raspbian 9 snap installations.