UITableViewCell's contents' alpha changes on its own - ios

Question

I've got a simple ViewController -- let's call it SettingsViewController -- which contains a UITableView with some custom cells containing a UILabel.
Whenever I load said SettingsViewController the UILabel inside the 1st cell gets its alpha set to some small number on its own, I don't ever change the value of any alphas. Also, the highlighting works as expected on pressing the cells. Sometimes, when I return to SettingsViewController from a different one, it's a different random cell, possibly 2 or 3 cells.
Here's a gif of what happens when I first load the SettingsViewController:
I'm using Swift 2.0 with Xcode 7.0.1 and running this code on iOS 8.4.1 as well as 9. I've also seen this happen in a UICollectionView with cells containing only a UIImageView - in that case it was the UIImageView whose alpha would get changed.
Here's my code for the SettingsViewController:
class SettingsViewController: BronzeBaseViewController {
#IBOutlet var settingsTable: UITableView!
private let textCellIdentifier = "Cell"
private let settingsList = ["Account Details", "About this App", "Terms of Service", "Privacy Policy"]
override func viewDidLoad() {
super.viewDidLoad()
self.settingsTable.delegate = self
self.settingsTable.dataSource = self
}
}
// MARK: - UITableViewDataSource methods
extension SettingsViewController: UITableViewDataSource {
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier(self.textCellIdentifier, forIndexPath: indexPath) as! SettingsTableViewCell
let row = indexPath.row
cell.titleLabel.text = self.settingsList[row]
cell.titleLabel.tag = row
cell.backgroundColor = getBackgroundColor()
return cell
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.settingsList.count
}
}
// MARK: - UITableViewDelegate methods
extension SettingsViewController: UITableViewDelegate {
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
switch(indexPath.row) {
case 0 :
self.performSegueWithIdentifier("accountDetailsSegue", sender: self)
case 1:
self.performSegueWithIdentifier("legalViewSegue", sender: self)
case 2:
self.performSegueWithIdentifier("legalViewSegue", sender: self)
case 3:
self.performSegueWithIdentifier("legalViewSegue", sender: self)
default:
}
tableView.deselectRowAtIndexPath(indexPath, animated: true)
}
}
And here's the class I'm using for the actual cells:
class SettingsTableViewCell: UITableViewCell {
#IBOutlet var titleLabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
let titleFont = UIFont(name: "ProximaNovaSoft-Regular", size: self.titleLabel.font.pointSize)
self.titleLabel.font = titleFont
}
}
Any idea what might be causing this and how to fix it properly?