New features
Option available in Preferences for playback of chord symbols
Mid-staff instrument changes now do almost everything automatically (see below)
Support for Orca (Linux) screenreader
Hairpins, voltas, and other lines now adapt anchor points when dragged
Much more functional piano roll editor (see below)
Splash screen displays progress messages while loading MuseScore
Diatonic pitch up/down (keep degree alterations) shortcuts
Select Similar Elements: Same Beat
#293113: New Score Wizard automatically numbers instruments
#18897: Property for beam style of tremolo (all strokes attached to stem)
#296075: Style for hiding brackets which span to a single staff when empty staves are hidden
#203026: Properties and styles for measure number positioning, including centered and below staff
#65241: Property and style for position of multimeasure rest numbers
#299644: Property for fretboard diagram rotation
Improvements
#16077: Double-click a header, footer, or instrument name to access the dialog for editing it
#27371: Score tabs can now be closed using mouse middle button
Improved layout of two-note and single-note tremolos, with and without stem
#93376: Smooth scrolling during playback in Continuous view
Various improvements to simplify searching and loading backup files
#303617: Metric modulation for dotted eighth to quarter
Automatic collision avoidance between rests and notes/rests in other voices
Staff property to automatically merge rests between voices
Allow selection of multiple similar items with shift+click
Allow "repeating a note" by clicking a notehead then pressing "R" in normal mode
Changes made in Preferences are applied significantly faster
Style options to align chord symbols within systems
More zoom controls
Additional plugin capabilities
Altered keyboard and mouse zoom precision and consistency
Improved performance of applying preferences
Chords playback is on by default (untick the "play" property to disable it)
Adding notes to a tuplet now adds them with respect to the tuplet's space
MuseScore 3 is now available as a Windows PortableApp
Altered Shift+L/R for leading space while in edit mode upon notehead
All symbols are now available for the plugins
Fixes
JACK audio/MIDI worked incorrectly on some platforms
#148311: Loop playback skipped final rests in the last measure
MIDI note-off events were not sent in some cases
Undoing slur addition to a range only removed one slur
Canceling a selection worked incorrectly in some cases
macOS package was not notarized in Apple
Various fixes for the text editing process
Fixed an issue when hiding notes or rests in a voice > 1 causes stems/beams to flip in a bad and unexpected way
Fixed an issue when two grace notes disabling vertical chord alignment (Maximum Shift Above)
Fixed an issue when "maximum shift above" leading to layout weirdness if measure has rhythm slashes and rests
Fixed an issue with inactive "Realize chord symbols" command
Fixed an issue when key signature appears in multiple places on the single staff
Fixed an issue with missing grid of measures in the "timeline" view
Fixed an issue with appearing of empty dialog during the "Save Online"
Fixed an crash during the drag & drop of volta in continuous view
Brackets were displaced in Continuous View
Nested tuplets in linked staves led to corruption
Octave selection was inconsistent in note input mode
Voices worked incorrectly in the parts dialog in some cases
Misclicking when attempting to create a range selection caused the current selection to be lost
On-screen rendering of synthetically emboldened fonts was broken in some cases
Smooth scrolling worked wrong in Continuous view when dealing with repeats
Saving Online a yet unsaved or uncompressed (mscx) file didn't work
Fixed zoom-box 100% selection bug.
Fixed a bug with ignoring of blank lines at top of text elements
Fixed an issue when cut/paste, drag/drop in Piano Roll Editor does not preserve NoteEvent values
Fixed a playback of chord symbols attached to fret diagrams
Fixed a note entry suggested position with no selection and last selected note in voice > 1
Fixed a display of the bold and underlined texts
Fixed the "Save Online" on AppImages
Complete list of issues resolved and improvements implemented
#307433: Fixed crash when adding voltas in continuous view and improved behaviour when there are repeats
#308023: Nothing happens when select Realize chord symbols via tools->Realize chord symbols
#308281: Fixed blank upload dialog on Mac
#307883: Key Signature appears too many times in Parts
#308145: Fixed a missing grid in timeline view
#308371: Fixed the bad stem directions on tab staves
#307945: Two Grace Notes Disable Vertical Chord Alignment (Maximum Shift Above)
#307946: Chord Symbols > Maximum Shift Above is weird if measure has rhythm slashes and rests
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