Elon Musk said two major problems at Twitter have been fixed after he spent a "long day" with the engineering team on Saturday.

The Twitter CEO tweeted that problems, which he said caused most of his tweets to be undelivered and accounts with large followings to be dumped, had been "mostly addressed."

"Long day at Twitter HQ with eng team," Musk tweeted. "Two significant problems mostly addressed: 1. Fanout service for Following feed was getting overloaded when I tweeted, resulting in up to 95% of my tweets not getting delivered at all. Following is now pulling from search (aka Earlybird). When Fanout crashed, it would also destroy anyone else's tweets in queue."

He added: "2. Recommendation algorithm was using absolute block count, rather than percentile block count, causing accounts with many followers to be dumped, even if blocks were only 0.1% of followers. Also, it's trivial to bot spam accounts with blocks."

Musk met with Twitter engineers to discuss the declining view count on his tweets in recent days and reportedly told them he was "only getting tens of thousands of impressions."

Musk also said in another tweet that oversized fonts and paragraph spacing issues will be fixed this week.

His comments came after users tweeted on Friday about a change to the font.

"Why does twitter use a different font depending on whether you're actively viewing a tweet," one user asked.

Another wrote: "New twitter font change literally makes the font smaller when i click on the tweet than just the preview this is so dumb why even change this."

Twitter did not immediately respond to a request for comment from Insider.