Players are still able to break blocks in a protected field and just get the message saying that they cannot break here, yet the block still breaks and they can pick it up. Though they cannot place.

Post your config

bypass-blocks: []
unprotectable-blocks: []
unbreakable-blocks: []
hiding-mask-blocks:

• '1'
• '2'
• '3'
• '4'
• '5'
• '7'
• '12'
• '13'
• '17'
• '18'
• '20'
• '24'
• '35'
• '43'
• '45'
• '47'
• '48'
• '49'
• '53'
• '60'
• '67'
• '80'
• '81'
• '82'
• '87'
• '88'
• '89'
• '99'
• '100'
• '108'
• '109'
• '110'
• '123'
• '124'
• '125'
• '128'
• '134'
• '135'
• '136'
  tool-items:
• 256
• 257
• 258
• 269
• 270
• 271
• 273
• 274
• 275
• 277
• 278
• 279
• 284
• 285
• 286
• 290
• 291
• 292
• 293
• 294
  repairable-items:
• 256
• 257
• 258
• 259
• 261
• 267
• 268
• 269
• 270
• 271
• 272
• 273
• 274
• 275
• 276
• 277
• 278
• 279
• 283
• 284
• 285
• 286
• 290
• 291
• 292
• 293
• 294
• 298
• 299
• 300
• 301
• 302
• 303
• 304
• 305
• 306
• 307
• 308
• 309
• 310
• 311
• 312
• 313
• 314
• 315
• 316
• 317
• 359
  force-field-blocks:
• title: House
  block: 42
  radius: 5
  custom-height: 9
  prevent-fire: true
  prevent-place: true
  prevent-destroy: true
  prevent-vehicle-destroy: true
  prevent-enderman-destroy: true
  prevent-explosions: true
  prevent-unprotectable: true
  prevent-item-frame-take: true
  prevent-flow: true
  protect-crops: true
  prevent-teleport: true
  can-change-owner: true
  cuboid: false
• title: Mansion
  block: 41
  radius: 10
  custom-height: 18
  prevent-fire: true
  prevent-place: true
  prevent-destroy: true
  prevent-vehicle-destroy: true
  prevent-enderman-destroy: true
  prevent-explosions: true
  prevent-unprotectable: true
  prevent-item-frame-take: true
  prevent-flow: true
  protect-crops: true
  prevent-teleport: true
  can-change-owner: true
  cuboid: false
• title: City
  block: 57
  radius: 20
  custom-height: 36
  prevent-fire: true
  prevent-place: true
  prevent-destroy: true
  prevent-vehicle-destroy: true
  prevent-enderman-destroy: true
  prevent-explosions: true
  prevent-unprotectable: true
  prevent-item-frame-take: true
  prevent-flow: true
  protect-crops: true
  prevent-teleport: true
  can-change-owner: true
  cuboid: false
  hideable: true
• title: Entry Bouncer
  block: 133
  radius: 10
  prevent-entry: true
  prevent-unprotectable: true
  prevent-flow: true
  enable-on-src: true
  can-change-owner: true
  hidable: true
  cuboid: false
  mask-on-disabled: 80
  limit: null
• title: Air of Atlantis
  block: 21
  radius: 15
  air: true
  no-conflict: true
  mixing-group: 1
  hidable: true
  cuboid: false
  mask-on-disabled: 80
  limit: null
• title: Launch Pad
  block: 7
  radius: 1
  launch: true
  no-conflict: true
  sneaking-bypass: true
  custom-volume: 20
  mixing-group: 2
  cuboid: false
  mask-on-disabled: 80
• title: Miner's Haste
  block: 79
  radius: 20
  cuboid: false
  dynmap-area: true
  ^potions:
  • FAST_DIGGING
  • SPEED
  • JUMP
    potion-intensity:
  • 5
  • 2
  • 5
    enable-with-redstone: true
    no-fall-damage: true
    mask-on-disabled: 17
    limit:
  • 0
  • 0
  • 0
  • 0
  • 10
    log:
    translocation: true
    rollback: true
    fire: true
    entry: true
    place: true
    use: true
    pvp: true
    destroy: true
    destroy-area: false
    place-area: false
    unprotectable: true
    bypass-pvp: true
    bypass-delete: true
    bypass-place: true
    bypass-destroy: true
    conflict-place: true
    rents-and-purchases: true
    notify:
    translocation: true
    rollback: true
    place: true
    destroy: true
    bypass-unprotectable: true
    bypass-pvp: true
    bypass-place: true
    bypass-destroy: true
    fly-zones: true
    warn:
    instant-heal: true
    slow-heal: true
    slow-damage: true
    slow-feeding: true
    slow-repair: true
    fast-damage: true
    air: true
    fire: true
    entry: true
    place: true
    use: true
    pvp: true
    destroy: true
    destroy-area: true
    unprotectable: true
    launch: true
    cannon: true
    mine: true
    settings:
    prevent-removal-if-player-in-field: false
    disable-simpleclans-hook: false
    max-size-translocation: 100000
    max-size-translocation-for-redstone: 1000
    version: 12
    prevent-place-everywhere:
  • creative_world
    prevent-destroy-everywhere:
  • creative_world
    show-default-welcome-farewell-messages: true
    sneak-to-place-field: true
    sneak-to-place-normal-block: false
    disable-ground-info: false
    global-field-limit: 1000000
    no-refund-for-fields: false
    public-block-details: false
    drop-on-delete: false
    disable-alerts-for-admins: true
    disable-bypass-alerts-for-admins: true
    off-by-default: false
    lines-per-page: 12
    log-to-hawkeye: false
    show-debug-info: false
    blacklisted-worlds:
  • creative_world
    auto-allow-clan-on-fields: true
    check-once-per-block-on-move: false
    use-blockids-in-snitches: false
    fence-max-depth: 50
    cuboid:
    defining-blocktype: 49
    visualization-blocktype: 20
    cleanup:
    player-inactivity-purge-days: 180
    purge-banned-players: true
    saving:
    frequency-seconds: 1
    max-records-per-snitch: 50
    visualization:
    frame-block-type: 20
    block-type: 20
    seconds: 30
    new-dotted-style: true
    end-on-player-move: false
    mark-block-type: 49
    default-density: 8
    blocks-to-send: 100
    max-fields-to-visualize-at-once: 5
    ticks-between-sends: 10
    grief-revert:
    min-interval-secs: 30
    black-list:
  • '92'
    mysql:
    enable: false
    host: localhost
    port: 3306
    database: minecraft
    username: ''
    password: ''

Some how the issue has now been resolved so all is good. Thank you though for your timely reply.